The most important plants to protect are frost sensitive plants like tropicals, tender potted plants, houseplants, some types of annual flowers, and frost sensitive vegetables.įrost sensitive vegetables (aka warm weather vegetables) that will need to be protected from frost include plants like tomatoes, beans, peppers, eggplant, melons, squash, tomatillos, okra and cucumbers.Ĭold hardy vegetables like peas, lettuce, spinach and other salad greens, carrots, broccoli, cauliflower, cabbage, kale and Brussels sprouts, won’t be harmed by a light frost. Many types of annual flowers, herbs and vegetables are also cold weather plants that survive frost without any damage. Cold weather garden plants, like perennials, trees and shrubs that are hardy in your growing zone are all plants that withstand frost.
Not all plants need protection from frost. If it seems the conditions are just right for frost, and it may dip below 40F, then protecting plants from frost is a good idea – it’s better to be safe than sorry. If the forecast is predicting overnight temperatures below 45F, that’s when I start to get nervous, and pay closer attention to the weather conditions. It won’t frost if it’s windy or cloudy, or when it’s raining outside. Just because it gets below 40F doesn’t mean frost is inevitable. However, there’s not really a specific frost temperature, it depends on the conditions. Frost can occur any time the temperature drops below 40F degrees on a clear, windless night. Many people wonder at what temperature to cover plants. Sensitive plants, like marigolds, need protection from frost How Cold Does It Have To Be To Frost? Taking the time to protect plants from frost damage will extend your growing season, sometimes by several weeks. The first few frosts aren’t usually killing frosts, but even a light frost is enough to ruin sensitive flowers and vegetable crops. It can also stunt sensitive vegetables and flowers, meaning the plants will stop growing for the season. Severe damage can ruin your crops, turning them to mush and rendering them inedible. But frost damage can be much more severe than that. What does frost do to plants anyway? Though frost won’t usually kill them, plants affected by frost can have minor to severe damage, depending on the plant and how hard the frost was.ĭamage to plants can be as minor as brown leaf edges and wilted flowers which just makes plants look ugly. How To Cover Plants To Protect From Frost Using Fabric.Can You Cover Plants With Plastic To Protect From Frost?.How To Protect Potted Plants From Frost.Which Plants Need Protection From Frost?.
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