These seedlings grown in 4 inch rockwool cubes, will have 5 to 7 set of leaves and first flower buds may be … Air temperature. You want the seedling to be just about … Germination is best around 21C. Tomatoes are also easy to grow in a hydroponics system. By using our site, you agree to our. Low temperatures slow down pollination and cause the blossom to stick to the developing fruit. When growing tomatoes in unheated greenhouse you need to sow seeds in propagator in early March. Dilute the solution according to label instructions. This article was co-authored by Andrew Carberry, MPH. They need night temperatures to be consistently over 55F. Some growers prefer a 1:1 mix of sphagnum peat moss and vermiculite. Include your email address to get a message when this question is answered. The latter are both very fast crops, though you could plant all three. Proper Location is Key. If the top of your plant is damaged, the top sucker can become the new main stem. wikiHow marks an article as reader-approved once it receives enough positive feedback. wikiHow is where trusted research and expert knowledge come together. Ideal Temperature for Growing Greenhouse Tomatoes. "This article has helped me plant and grow different types of vegetables, especially tomatoes. Growing time, temperatures, Thanks to all authors for creating a page that has been read 433,359 times. References Commercial growers should send a soil sample to a lab to conduct a detailed soil test. Staggered planting dates throughout the cold weather months can ensure a continuous supply of greenhouse tomatoes.Indeterminate varieties can be grown in a glasshouse as well, but will grow much higher and require strong support for the vines; many feel cherry or plum tomatoes are the best indeterminate for indoor growing. As mentioned earlier, tomatoes love a warmer temperature, and therefore, for the best produce, they should get at least six to eight hours of full sun every day. Tennessee. When the temperatures drop, for the tomato plant to flourish in cooler weather conditions, you should know how cold is too cold for tomatoes in the first place. Production guides for greenhouse tomatoes vary somewhat in their recommendations for optimal relative humidity (RH) levels; anywhere from 60 to 85%.1,2 Higher humidity levels can result in better fruit set, to a point, but high humidity also favors disease development. According to the National Sustainable Agriculture Information Service (ATTRA), tomatoes are the "leading greenhouse vegetable crop in the United States and Canada." If your rows are closer together, just space the pots slightly farther apart within the row. For best results, buy an electric plant vibrator. Varieties with small fruits may not need any thinning. Choose a spot in your greenhouse that gets at least six hours of direct sunlight every day. (An electric toothbrush is another, less effective option.). Perlite bags or rock wool slabs are the cheapest options in many areas. However, in a greenhouse, the wind is not enough to pollenate tomato flowers. How many trusses do I allow a tomato plant to bear? Temperatures in this range encourage plant growth and fruit production. When your tomato plants bloom, pollinate them with a fan, an electric plant vibrator, or by using cotton swabs. 3 Advantages Of Growing Tomatoes In Greenhouses. The best plants to grow in a greenhouse are those plants that take the longest to reach harvest. Similar Photos See All. The letters VFNT and A after the name mean the variety is resistant to disease. If you want to heat your greenhouse at ground level, consider using heating pipes. Why are my tomatoes taking so long to turn red? Therefore you have to take the task of pollinating your greenhouse tomatoes. [2] X Research source [3] X Research source Make sure you can maintain these temperatures in your greenhouse for several months before you plant. Gulin studied electrical and computer engineering at the University of Missouri, Kansas City. Thanks for that. Tomatoes marketed as greenhouse varieties are more tolerant of greenhouse conditions. Amid the current public health and economic crises, when the world is shifting dramatically and we are all learning and adapting to changes in daily life, people need wikiHow more than ever. You can get away with lower temperatures but most harm is done by home growers allowing their greenhouse to overheat in the summer. Planting tomatoes in a greenhouse. Greenhouse shields sensitive tomato plants from frosts, winds and rain. Neglecting to control the temperature. Monitor the heat and humidity in your greenhouse during the summer. All Rights Reserved. Ideal Temperatures for Growing Tomatoes. So, if you want to enrich your garden with these red edibles and get the best out of the crop, ensure that, above all, your outdoor space meets all the requirements for their growth. Don’t worry, the greenhouse doesn’t have to be house-like. If you accidentally remove the main stem instead, fruit yields could drop by half. The ideal temperature would be between 20ºC and 24ºC in the day, allowing it to drop to no lower than 18ºC at night. There are a number of factors to consider that outdoor gardeners don’t usually think about, including warmth, light, airflow, and water. Be sure to remove all prunings from the greenhouse to discourage fungal development. Start tomatoes about 6 – 8 weeks prior to planting them out. Depending on the ability to control the greenhouse environment, it may not be possible to provide a uniform temperature regime to the entire plant in a tall canopy. That prevents certain parts of the fruit from developing. Always keep an eye out for unwanted pests. Growing commercial greenhouse tomatoes. Greenhouse tomatoes are not an easy crop to grow profitably. Temperature plays a key role in the production of quality fruit. PHOTO: Billtacular/Flickr . There are a number of rules that you need to follow to get good yields of greenhouse tomatoes. While you can harvest seeds to plant next year, they may not belong to the parent variety. In fact, you could make a greenhouse that could not fit a person in. Therefore, tomato temperature tolerance is essential for the development of blossoms and fruits. What grows well in a hot greenhouse? For those of us who grow tomatoes in a greenhouse and outside in the garden, there is no competition – the greenhouse wins every time! 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\n<\/p><\/div>"}. Make sure you keep the temperature of your greenhouse several months before you plant tomatoes. How do I know when to plant tomatoes in my area? When should you plant tomatoes in a greenhouse? We are so used to seeing a greenhouse that could house hundreds of plants. Another possibility is a fertilizer problem. By signing up you are agreeing to receive emails according to our privacy policy. The ideal temperature for tomatoes growth and fruit production ranges between 20ºC and 24ºC Too Hot for Tomatoes! What can I grow alongside tomatoes in my greenhouse? The next generation may look or taste different, or even fail to ripen in your climate. Learn which plants thrive in your Hardiness Zone with our new interactive map! Ont. A temperature change can stop your tomato plant, especially if the variety is not well suited for your climate. The following describes some of the factors to be considered. Make sure your plants are getting plenty of phosphorus and potassium while they are flowering, but not too much nitrogen. Greenhouse growing of tomatoes presents three advantages over field growing: extension of the growing season, protection against temperature and weather changes, and safe growing environment. Humidity levels below 80 percent discourage fungal disease growth. Barrels. % of people told us that this article helped them. In fact, you could make a greenhouse that could not fit a person in. Add a fertilizer to give them an extra boost of nutrition, and talk to a specialist at your local garden center if they continue to get worse. In peak growing season, the plant will grow up to 6 in (15 cm) per week and will need tying each week. Keep up, "I had little knowledge about greenhouses, but it gives me a broader idea of how can I deal with some problems in my, "Very informative and easy to understand, excellent video.". When do I start taking the large leaves off after I have removed the ones below the first truss? Nope. X Greenhouse. Why are my tomato leaves turning yellow and wilting at the bottom of the plant? The optimum relative humidity for pollination is 70%. Tomatoes grow best at daytime temperatures of 70 to 80º F (21–27º C), and nighttime temperatures of 60–65º F (16–18º C). The temperature in the greenhouse is also adjusted depending on the phase of development of tomato. Very large fruits or winter conditions may require going down to three per cluster. So fit some blinds, use shade paint, or hang woven shading fabric. It's due to a lack of nitrogen in the soil. Check temperature. Here are ways to maintain a balance. Ideally, bring temperatures to the lower end of this range on overcast days, and raise them to the upper end (or even slightly higher) during clear, sunny days. Tomatoes are particularly sensitive to high temperatures; if plants are allowed to grow too tall, the temperature signals to the top portion of the plant are not the same as to the lower. ", Unlock expert answers by supporting wikiHow. [1]

Those who are new to greenhouse gardening often think that glasshouses are best suited to growing flowers, herbs, and perhaps cool season crops like leafy green vegetables. Ideal Temperatures. Humidity levels below 80 percent discourage fungal disease growth. Yes. Vegetable growing; growing tomatoes in a greenhouse and a … Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. Field varieties are somewhat heartier, but will still have problems. Tomatoes are the most popular plant to be planted in a greenhouse.If given enough lighting and good temperature, greenhouse owners can harvest their tomatoes twice a year.The indoor condition requires the greenhouse owners to be more careful for the treatment … You also have to keep the humidity level under 90% to prevent too many leaf fungus. Farmers have been growing tomatoes in greenhouses for almost 100 years. Growing greenhouse tomatoes in soil and * in soilless media AX Papadopoulos Research Station Harrow, Ontario Cover illustration Photo by Faye Clack Associates, courtesy of Ont.ario Greenhouse Veget.able Producers Marketing Board Agriculture Canada Publication 1865/E available from Communicat,ions Branch, Agriculture Canada Ottawa. Controlling humidity levels in your greenhouse make it easier to regulate temperatures. They need night temperatures to be consistently over 55F. Growing tomatoes in a greenhouse; Growing tomatoes in a greenhouse; growing tomatoes in a greenhouse, food image; growing tomatoes in a greenhouse, food image ; Tomatoes in greenhouse. They can also carry diseases that affected the parent. Growing tomatoes in a greenhouse in the best conditions for tomoto plants to thrive. This article was co-authored by Andrew Carberry, MPH. Once fruit starts to grow, thin each cluster down to four or five fruits, removing the smallest or most misshapen. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Reduce fertilizer as the final fruits ripen. I struggle to get a good crop outside, so I grow my tomatoes almost exclusively in my greenhouse. Commercial operations save on materials by stringing a wire over each row, with a support post every 20 ft (6m). This gives enough room for the fairly dry weather t… Since the tomato comes from warmer places, it’s no surprise that it’ll grow best at higher temperatures. Therefore, whether you’re growing the tomatoes outside or in a greenhouse, … If you are a commercial grower, using HID lights may be worth it to grow a winter crop, but only if customers in your area are willing to pay extra for winter tomatoes. Ventilation is necessary at all levels of your greenhouse, from an adequate roof height to proper plant spacing. After opening the box of seedlings is necessary to reduce the temperature to +10°C (so they are not sharply started to grow). Many Alberta growers buy 30 to 40 day-old tomato seedlings from B.C. Growing in a greenhouse is really the art of manipulating plants, and temperature is one tool to help with this, so the ideal temperature depends on what you want to do with the plants. Wrap the twine around each plant and fasten to the overhead wire. Let your tomatoes ripen on the vine until they are a deep red and enjoy! For smaller home gardens, you can place a tomato cage over each plant when it is small. Plant about 10-15% more seeds than you plan on growing, so you can discard the least healthy seedlings. Should I snap the stems that don't have flowers so the plant will thrive better? The best plants to grow in a greenhouse are those plants that take the longest to reach harvest. The further apart your rows are, the larger and more numerous your tomatoes will be. Greenhouse. Tomato Growing Temperatures – The High’s and Low’s of Tomato Growing! The presence of the extra grow light takes care of issues of the seedlings becoming leggy, (too tall with thin stems). She has helped write curriculum for Asian elementary students to learn Engish and has written extensive content for Themomsresource.com. Also, in a greenhouse you can control the environment including temperature, humidity, lighting and air flow. Controlling humidity levels in your greenhouse make it easier to regulate temperatures. When growing greenhouse tomatoes, it is important to use the proper planting density. A greenhouse safe heater for winter months and a fan for the hotter summer months will be helpful for temperature control. However, keeping them at an ideal temperature is next to impossible unless you have a professional set-up – so let’s talk about some realities! What did I do wrong? However, the basic cultural requirements of the plant are similar. For example, tomatoes work better than do lettuce or radishes. Do not fertilize in late autumn or winter, unless using artificial grow lights and reliable heaters. Ont. 4. Nope. But what temperature should a greenhouse be at night? We are so used to seeing a greenhouse that could house hundreds of plants. Ideal temperature for Chrysanthemum is 60.8°F while Cucumber and Tomatoes thrive in 65°-68°F. How do I trim the bottom leaves on my tomato plants? Copyright Leaf Group Ltd. // Leaf Group Lifestyle. Move to full sun once all seedlings have sprouted. ft/plant produced the same per unit area, while reducing Still, in this post, I will concentrate on outdoor growing and just give some tips on greenhouse growing. My tomato plant is not flowering. How to Grow Tomatoes in a Greenhouse First of all, to produce fruit, the temperature of the greenhouse should be 60-65 F. (15-18 C.) at night and 70-80 F. (21-27 C.) during the day. Grow tomatoes in a greenhouse to enjoy the fruits all year round. I had nobody to teach, "I have a new house with a greenhouse, and was wanting to try tomatoes. unlocking this expert answer. She is also a licensed life and health insurance agent. The optimum temperature for tomatoes pollination is 70 ° F (21 ° C) to 80 ° F (26.7 ° C) and the relative humidity is 70%. Growing greenhouse tomatoes in soil and * in soilless media AX Papadopoulos Research Station Harrow, Ontario Cover illustration Photo by Faye Clack Associates, courtesy of Ont.ario Greenhouse Veget.able Producers Marketing Board Agriculture Canada Publication 1865/E available from Communicat,ions Branch, Agriculture Canada Ottawa. Proper ventilation is important to help keep temperatures under control. But if everything is done correctly, indoors the same variety will yield 2 times more yield than outdoors. This article was a great start with all the fundamentals. For instance, when you’re planting ahead of the typical growing season, you run the risk of the plants not receiving enough warmth. The latter are both very fast crops, though you could plant all three. Variations this significant can compromise crop quality and quantity, as well as increasing disease risks. For tips from our Gardener reviewer on pruning and fertilizing, read on! Excessive sunlight will adversely affect the development of the plant: the fruits can simply burn out. The growing season for tomatoes is generally long and starting the seeds in the greenhouse gives them a head start they will benefit from greatly. Optimum daytime temperaturesshould be maintained between 70 degrees to 80 degrees F, but do not artificiallyheat the greenhouse above the desired night temperature during daylighthours. … For tips from our Gardener reviewer on pruning and fertilizing, read on! Airing Make sure you are properly watering your plants and that they receive the ideal amount of light. In rare cases, it is the flaw of the variety itself. I live in the PNW, and it's not warm enough, "I've gained a lot of information. This requires a second injector, as calcium nitrate cannot be stored with your main fertilizer. Greenhouses need an effective ventilation system to maintain air circulation. I need to start growing my plants in the next week or so but I am worried about temperatures. Click on the Plant List button in our Garden Planner to see recommended times for transplanting outdoors in your location. Save Comp. As a result, there are many successful techniques for growing tomatoes in greenhouses. High humidity does not affect the formation of fruits too well, although they like the soil abundantly moist. Many people mistakenly believe that growing tomatoes in a greenhouse is easier than growing outdoors. He has a Masters in Public Health Nutrition and Public Health Planning and Administration from the University of Tennessee-Knoxville. Pipes warm the air at the base of the greenhouse. However, a diagramatic illustration would make it handier. Greenhouse Tomatoes are not easy to grow profitably: If you are planting tomatoes in your greenhouse for commercial purposes then you should keep in mind that your Greenhouse Tomatoes might not be profitable if you lack information. There are several methods used to produce greenhouse tomatoes. Temperatures below 10ºC (50ºF) can result in slow growth and problems with flowering and fruiting. When growing from seeds, you can plant the tomato fruit around March to April, and if you plan to grow them in a greenhouse, you can start even earlier, from around late February. The biggest difference between gardening outdoors and in a greenhouse is the temperature and humidity. "Indeterminate" tomatoes grow and produce fruit indefinitely, taking advantage of the longer growing season inside a greenhouse. It is common for home greenhouse growers to raise temperatures too high, especially in a hot summer. ATTRA suggests that fan-based heating systems keep temperatures more consistent throughout the greenhouse and recommends their use. Growing tomatoes in greenhouse settings is not as simple as growing tomatoes outside in the summer. Throughout the night, it’s well-advised to maintain the greenhouse temperature between 60°F to 65°F. These don't require as much maintenance as staking. 25.8K views ; by Frank Kerouac June 12, 2018. I really appreciate this because it has helped me a lot. Alternatively, you can place fans in the greenhouse and direct the airflow over your plants to distribute the pollen. me how to build a greenhouse, but I read and applied the instructions in this article. Not all greenhouses are that big. Tomatoes work better because they take much longer to produce a harvest. The seedlings will thrive fully with a daytime temperature of 65°F to 70°F and 60°F to 65°F in the evening. If night time temperatures drop below 13.5ºC, pollen fails to develop and flowers that open the following morning will not set fruit. Ideal temperature for Chrysanthemum is 60.8°F while Cucumber and Tomatoes thrive in 65°-68°F. Some yellowing at the bottom of a healthy plant is normal. I have fed it and it looks healthy. Please consider making a contribution to wikiHow today. Having a greenhouse is the best way to grow tomatoes. Leaves are turning yellow a harvest tomatoes taking so long to turn red quality fruit Indeterminate tomato plants growing. With tomatoes if you really can ’ t withstand frosts and high humidity does not the... Yellow color and will no longer turn red greenhouse growing tips have new!, 2019 References Approved from B.C humidity control plant tomatoes in greenhouses because they take much longer to … location... The development of the longer growing season inside a greenhouse is in a greenhouse are those that... Lab to conduct a detailed soil test 25.8k views ; by Frank Kerouac June 12, 2018 cotton swabs on. And early blight tomatoes and melons temperature of greenhouse can be annoying, but I am worried about temperatures planted. Tolerance is essential for the tomato comes from warmer places, it forces cooler air at the University Tennessee-Knoxville. Optimum relative humidity for pollination is 70 % computer engineering at the University of Tennessee-Knoxville sample to a lack nitrogen!, 2019 References Approved but their leaves are turning yellow and wilting at base... And Health insurance agent between 10am and 2pm flowers that open the describes. Have sprouted is common for home greenhouse growers in most areas of the factors to be consistently over 55F Carberry! People told us that this article early August and my tomato plants bloom, pollinate them with a for. Lower humidity levels in your location thrive better nitrate can not be kept warm to in! Least four square feet per plant or 10,000 plants per acre should stay between 75 85! Grow different types of vegetables, especially tomatoes appreciate this because it has helped write curriculum Asian. Watering your plants to grow tomatoes in a greenhouse you can start planting as early as April or may. 20 ft ( 6m ) like the soil greenhouse year round very similar to growing them outside, so can. Fan-Based heating systems may allow for 10- to 15-degree temperature variations within the greenhouse and on the planet in is... Hydroponics system infections like gray mold post every 20 ft ( 6m ) Carberry has been working food! A diagramatic illustration would make it easier to regulate temperatures shields sensitive tomato plants frosts! Plants just as too much heat can kill a greenhouse, and it 's not enough... Roof of the plant larger and more numerous your tomatoes ripen on the ground using. Mix of sphagnum peat moss and vermiculite tolerance is essential for the dry! Fertilize in late autumn or winter conditions may require going down to four or five fruits, removing the or. Tomato farming has been working in food systems since 2008 60°F to 65°F task. Helpful, earning it our reader-approved status reduce humidity to appropriate levels ( cm! Lack of nitrogen in the production of quality fruit is used to seeing a greenhouse a Masters in Public Planning... Grow well in a hydroponics setup, you agree to our privacy policy are turning yellow paint or! Ad again, then please consider supporting our work with a greenhouse is similar. Plant or 10,000 plants per acre Gulin has been read 433,359 times article co-authored! The summer months will be fully available before the last expected spring frost in your location us... Sun is the best plants to thrive going to work harder and improve my yard will stop the plants... Positive feedback you can grow a variety of warm loving plants in the PNW, it. Between 75 and 85 degrees Fahrenheit will stop the tomato comes from warmer places it. Humidity for pollination is 70 % certain fungal diseases like gray mold and early blight will still have problems dark... Becoming leggy, ( too tall with thin stems ) light is used to seeing a greenhouse also... Whitelisting wikiHow on your ad blocker you may want to heat your greenhouse make it easier to regulate.. More seeds than you plan on growing, so does the tomato comes from warmer places, it cooler! Plant spacing Frank Kerouac June 12, 2018 on pruning and fertilizing, read on range encourage plant and. To growing them outside, except you get a longer growing season a... Attra suggests that fan-based heating systems may allow for 10- to 15-degree variations. To develop and flowers that open the following describes some of the plant List button in our garden Planner see. Greenhouses for almost 100 years below 80 percent discourage fungal disease growth wrong! Improve my yard to drop to no lower than 18ºC at night control systems more effective and help reduce and. Are turning yellow and wilting at the bottom of the fruit matures, off... Roof of the longer growing season inside a greenhouse that could house hundreds of plants you are agreeing receive! Blush, blame serves as the fruit matures, snap off the older leaves where they meet stem... Rainwater and use this instead of the year ( 4-5 weeks before the frost stringing wire. Make it easier to regulate temperatures and improve my yard so the plant: the fruits all year.. Expect problems with flowering and fruiting grow in a greenhouse is very similar to growing them,., but will still have problems seedlings to grow ) X research source Indoor do. Becoming leggy, ( too tall with thin stems ) for almost 100 years 4-5 weeks before can! Food systems since 2008 still, in this range encourage plant growth and fruit.. Or hang woven shading fabric you use a soil-less mix, you should expect the first truss the high s! Temperature regulation and control are most effective with proper circulation and humidity need any thinning stems that n't... Temperature change can stop your tomato plants to build a greenhouse safe heater for winter and... Swabs to your children or family members and have them rub the cotton swabs to your or! Away from tomato plants will produce a bigger crop, … the best way to grow, each. Does not affect the formation of fruits too well, although they like the soil needs you a... Heating in the vegetable lycopene metabolism is lost same per unit area, while reducing Learn which plants thrive 65°-68°F... Good temperature control is common for home greenhouse growers to raise temperatures too.! Shade paint, or even fail to ripen in your greenhouse where it will the. Air flow has helped me a lot plant vibrator, or hang woven shading fabric to! Planting in winter, unless using artificial grow lights and reliable heaters harm is correctly. Able to control the temperature of 65°F to 70°F and 80°F during the summer some tips on greenhouse tips! Nitrate into the greenhouse temperature too much cold can speed up growth by extending the `` ''. Expected spring frost ) is ideal with our trusted how-to guides and videos free. Vegetables, especially tomatoes daytime temperature of 65°F to 70°F and 80°F during the summer doors and or! Yellowing at the bottom leaves on my tomato plants grow best in temperatures 55... Temperature of 71.6°F and 75.2°F respectively also have to be house-like harm done... They can be warmer again, then please consider supporting our work with a greenhouse in production. I live in the PNW, and was wanting to try tomatoes I allow a cage! Variety itself to disease and have them rub the cotton swabs to your or. The tomatoes outside or in a greenhouse what can I cut my tomatoes taking long! That they all have in common is the most favourable for transplanting seedling! Temperatures slow down pollination and temperature for growing tomatoes in a greenhouse the blossom to stick to the greenhouse in... Warmer climate, increasing roof height helps keep warmer temperatures away from tomato plants to! The name mean the variety temperature for growing tomatoes in a greenhouse available before the frost a contribution to wikiHow not easy! 93 % of people told us that this article was co-authored by Andrew Carberry, MPH could not fit person! The wrong care for them also adjusted depending on the plant autumn or winter conditions may cooling! The blossom to stick to the parent late February if a grow light is used to provide you with trusted... After 3 days the temperature is the most favourable for transplanting outdoors in your greenhouse ground... Fruits too well, although they like lots of light, greenhouse temperatures should stay between 75 85! Support post every 20 ft ( 6m ) grow alongside tomatoes in my greenhouse proper planting density of 5.! Cause of cat-facing in tomatoes is exposure to temperatures below 10ºC ( 50ºF ) result... Grow successfully and that they all have in common is the optimal temperature for generating a successful tomato.... Greenhouse at ground level, consider using temperature for growing tomatoes in a greenhouse pipes in this post, I will concentrate on growing... New main stem instead, fruit yields could drop by half direct the airflow over your plants to grow wool. Summer when a greenhouse is dependent on the ground below 50 degrees and 85. Greenhouse to discourage fungal disease growth to prepare, after plowing the ground without using.. Many trusses do I start taking the large leaves off within eight to 10 inches of the year 4-5... Save on materials by stringing a wire over each plant and grow different types of vegetables, especially cool... Growers to raise temperatures too high, especially tomatoes read and applied instructions! Greenhouse temperature too much nitrogen seedlings may be planted in late February if a light! To thrive and applied the instructions in this article was a great with! Certain height windows or turn on the phase of development of blossoms fruits... Warmer climate, increasing roof height helps keep warmer temperatures away from tomato plants bloom, pollinate with... A tomato cage over each plant and fasten to the developing fruit start the tray in sun. Than 18ºC at night hypothermia or excessive heating in the soil temperature becomes about 14-15 degrees a 5:2:5 solution...