Winter temperatures in Florida can dip low enough to harm tropical, subtropical, and sometimes even temperate plants—especially if they’re not used to the cold. Plants acclimate by gradually adjusting to cooler temperatures over time, but sudden freezes after a warm spell can cause more damage than a freeze during colder weather. While most plant parts can adapt to the cold, fruits and roots aren’t as resilient, and plants in containers are especially vulnerable.

To help your plants survive a freeze, focus on acclimatization, protection, and proper post-freeze care. Here’s what you can do:

Before the Freeze

• Planting Site Selection: Florida’s climate varies, and each yard has its own “microclimates.” Choose plant locations wisely, avoiding low areas where cold air settles and providing barriers like fences to shield plants from cold winds.
• Proper Nutrition: Healthy plants handle the cold better and bounce back faster. Just avoid fertilizing too late in the fall, as it could trigger growth that’s more prone to cold damage.
• Shading: Trees can act as natural protectors during freezes, trapping heat at night, but make sure sun-loving plants aren’t shaded too much, or they’ll become weak and cold-sensitive.
• Windbreaks: Use fences, buildings, or other plantings to protect tender plants from chilly winds, especially during advective freezes.
• Irrigation: Watering plants before a freeze helps by trapping more heat in the soil, but be careful not to overwater as soggy soil can harm plant roots.

Winter Protection Methods

• Move potted plants into sheltered spots or group them together and add mulch to reduce heat loss.
• Apply mulch around plants to protect their roots and keep the soil warmer.
• Use coverings like cloth sheets, quilts, or commercial frost cloths to trap heat and prevent frost damage, but avoid letting plastic touch plant leaves as it can cause more harm.
• If needed, you can add a light bulb under the covering to provide extra warmth.

After the Freeze

• Watering: After a freeze, watering helps thaw the soil and provides much-needed hydration, especially on sunny days when plants might lose water.
• Pruning: Wait to prune severely until new growth appears. This ensures you’re not accidentally cutting off live wood. Look for signs like a lack of bud growth or a weak overall appearance to spot cold damage, and check the bark on woody plants for discoloration.

Although freezes in Florida can be rare, they can still cause damage. By staying informed and taking action ahead of time, you can protect your tropical and subtropical plants and ensure your landscape thrives, even through the coldest months.