Protecting plants from frost is crucial to prevent damage to tender vegetation during cold weather. As Floridians, we don't deal with Frost often and sometimes we find ourselves unprepared. Frost can damage plants through freeze injury. When the temperature outside drops below freezing, the water within plant cells can freeze causing tissue damage. Plants have varying levels of hardiness and gardener's should have a good idea which plants will need protection during a frost.

Here are some effective ways to cover plants and shield them from frost:

Row Covers or Frost Blankets:

• Use row covers or frost blankets made of breathable fabric (such as burlap or spun-bonded polyester) to create a protective barrier over plants.

• These covers allow sunlight, air, and moisture to reach the plants while providing insulation against frost.

Old Sheets or Blankets:

• Use old bed sheets, blankets, or quilts to cover plants. Secure them with stakes or rocks to prevent them from blowing away.

• Make sure the covers reach the ground to trap heat around the plants.

Plastic Tarps or Sheets:

• Plastic sheets or tarps can be effective in protecting plants, but they should be used with caution. Plastic can trap moisture, and if not properly ventilated, it may cause excessive humidity, leading to other issues.

• If using plastic, create a frame or support structure to prevent direct contact with the plants.

Mulch:

• Apply a thick layer of organic mulch, such as straw or wood chips, around the base of the plants.

• Mulch helps insulate the soil, preventing temperature fluctuations and protecting plant roots.

  
  

Homemade Cloches:

• Create individual protective covers, or cloches, using items like gallon milk jugs, 5 gallon buckets, or glass jars. Place these over individual plants to create a mini-greenhouse effect.

• Ensure that the covers are removed during the day to allow ventilation and prevent overheating.

Watering Before Frost:

• Water the plants thoroughly before the expected frost. Moist soil retains heat better than dry soil, providing additional protection.

Cold Frames:

• Cold frames are structures with transparent tops that can be used to cover and protect plants. They act as mini-greenhouses and provide insulation against frost.

Avoid Plastic Directly on Plants:

• If using plastic, avoid direct contact with plant foliage, as it can transmit cold to the leaves. Use stakes or other supports to create a buffer.

When covering plants, it's essential to monitor weather conditions and uncover them during the day if temperatures rise. Additionally, proper ventilation is crucial to prevent excessive humidity and fungal issues.