Once they're growing, plants can be kept where the air temperature is 70 F during the day and 65 F at night. The ideal is an average of 18°C with a maximum of 18°C and minimum of 12°C. This is an intensive gardening method and requires particular attention to fertilizing and adequate watering. Tomatoes and peppers loathe cold weather - they’re tropical plants. Pepper plants of any variety quite frankly like it hot—whether they're chili peppers or sweet peppers. The personal touch is so important and something we all can enjoy—in the creation or receiving! For nighttime temperatures a couple of degrees below freezing, we'll bring plants inside or cover. Select plants that are grown in your own locale for the best success. You can start peppers from seed. I was very pleased to have gotten everything except the okra hardened off (I know okra prefers 60 degrees or better, but I'll still push it to 50 or so), but now my peppers seem to be pouting and yellowing a bit. For successful growing, you need to plant ghost peppers in a humid and hot environment. If you have an unpredictable climate, a great way to plant peppers is in large containers. The added protection of the house should keep them from "wilting" from cooler winds. Another great spot to plant peppers is along the side of a house, garage, or shed where they receive blazing sunshine. Pepper plants are particularly susceptible to over-watering; in fact, too much water can kill them. Due to temperatures remaining above freezing, the ghost pepper is a perennial plant that grows indoors for 5 years or more producing new crops every year. Many people who grow peppers use black plastic mulch throughout the growing season to retain warmth around the plant's base and then use plastic covers as the plant matures. In USDA zones 10 and above, grow peppers all year long as perennial Peppers like warmth, so wait to plant until nighttime temperatures have consistently reached 60 degrees and all danger of frost has passed. To get the best start, plants should be hardened to the climate where they will grow. Transferring to a greenhouse is a great idea for those with short growing seasons. Peppers prefer warm days and warm nights, but there are some ways you can protect them. This does work but we are only in those low temps for a short time overnight. Put shade cloth structures over plants to protect them from direct rising temperatures. Most peppers will drop their blooms when daytime temperatures get much above 90 degrees F. in combination with night temperatures above 75 degrees F. Little is known about how cold affects plants during the night (when the incidence is higher), so that was the objective of our work. If you are looking to optimize your flowering and fruiting, then providing daytime temperatures above 70 ° F (20 ° C) is ideal. Pepper. Before you plant peppers outdoors, it’s important to be absolutely certain that the chance of frost is long gone. This warm-season vegetable prefers temperatures between 70 and 80 degrees F during the day and 60 to 70 degrees F at night. This plant will not stand temperature under 70° F. The temperature of the soil should be 80° F – 90° F for proper germination. Tender tropical plants are exceptionally vulnerable to chilly winds, frosts and freezes, but cold temperatures don't have to be a death knell for sensitive flowers, trees or shrubs. Plant them 18 to 24 inches apart in a sunny, well-drained spot. How to Protect Plants from Frost. This article is accurate and true to the best of the author’s knowledge. Keep them warm and moist until sprouting. - Planted Shack A greenhouse that can be heated and has electricity is ideal. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters. Generally, you will want nighttime temperatures to be over 60 degrees Fahrenheit before you put pepper plants outside. Planting in raised beds can keep peppers warmer in times of dropping temperatures. Learn your which growing zone you are in (if your country has such a classification system; the US system is coordinated by the USDA) or at least your likely low and high temperatures for the year and choose plants that can withstand those temperatures. Pepper plants may struggle and wilt during the day, if the nighttime temperature stays above 80 degrees, but the plants do not usually die. Plants will tolerate a minimum night temperature of 12ºC (54ºF), but better results are achieved above 15ºC (59ºF), and avoid temperatures above 30ºC (86ºF) as this can reduce yields Maintain a humid atmosphere in greenhouses by damping down twice a day in hot weather As soon as temperatures during the night falls below 10°C consistently, small and hollow fruit develop. They need nighttime temps in the 50's or better, daytime in the 70's minimum. Increased night temperatures significantly increased the rate of senescence and maturity was achieved in these plants 15 days earlier than in the normal temperature chamber. You will need a climate controlled space. Night time temperatures are consistently above 50°F (10°C) Soil temperature has risen to 65°F (18°C) Seedlings have been hardened off; Hardening Off. Once nighttime temperatures reach at least 60°F (16°C), transplant seedlings outdoors, spacing them 18 to 24 inches apart. 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