How to Protect Flowers from Freezing


Due to inclement weather or a cold front, frost may appear on the ground in your garden. When frost appears, the temperature of the ground is 32 degrees or less, which may cause your flowers to freeze, causing damage and death of the plant. Prevent your flowers from freezing by protecting them ahead of time. With a few supplies and some planning, you can help your flowers survive sudden cold weather and live a long, healthy life.

Step 1

Water your plants in the evening as the sun sets. If the ground is moist, the air directly around the soil will be moist, keeping the temperature slightly warmer around your flowers.

Step 2

Prevent the accumulation of cold air around your flowers by blowing an electric fan in the direction of your flowers. This air circulation will prevent dew from settling on the soil, freezing, and damaging the roots of the plant.

Step 3

Bring all potted plants inside. Because potted plants are raised from the ground, they are more susceptible to freezing.

Step 4

Place a large jar or cup over each individual plant. If your plants are small enough to fit under a jar or cup, place them on top of the plant overnight to centralize the heat. Remove these jars the next morning.

Step 5

Paint milk jugs black and place them around your flowers during the day. The jugs will attract heat, which will heat up the water. The water will retain the heat throughout the night, spreading warmth to the flowers and preventing them from freezing.

Tips and Warnings

  • Use a battery-operated fan or protect wires and outlets from water when using a fan outside.

Things You'll Need

  • Electric fan
  • Jar or cup
  • Milk jugs
  • Black paint


  • The Garden Helper: Frost Protection for Your Plants
  • Redwood Barn Nursery: Frost Protection in the Garden

Who Can Help

  • Purdue: Spring Frost Can Spoil the Show
Keywords: flowers to freeze, frost appears, warmth to the flowers

About this Author

Lindsay Champion’s writing has been published in Time Out New York, The New York Press, McSweeney’s, Fray Quarterly and SMITH Magazine. She has written hundreds of health and fitness articles for numerous internet publications. Champion earned her Bachelor of Fine Arts from NYU's Tisch School of the Arts, where she studied writing.