I live in an area that sometimes gets a freeze, but in the last 3 winters I have only had to protect my plants on two overnight occasions. (Thanks global warming? eek, what a thought)
These are my personal notes for the plants I own and my own guide organized by temperature so that I know which plants to protect depending on the forecasted temperature. The names for these hard to find numbers are numerous: Cold hardiness/tolerance/damage and Freeze hardiness, tolerance, or damage.
*Please note, there are many variables that effect whether a plant will survive a freeze. An older tree can often survive a hard freeze of short duration. If you live near a large body of water you will have a buffer effect that will create your own microclimate to protect your plants. Plantings closer to your warm house will generally survive. I scavanged the internet for most of these numbers which are only guidelines, please don’t be upset if you lose a plant in a freeze. New growth is more susceptible to damage than mature growth.
Freeze & Cold Tolerances of Subtropical Fruit trees
Low Cold Tolerance/
Sensitivity (Older Trees)
High Cold Tolerance/
Sensitivity (Young Trees)
|Peanut Butter Tree||?||32|
|Mulberry||? (very low)||25 (new growth damage)|
|Citrus Trees||Upper Twenties||31|
|Prickly Pear Cactus||?||15|
|Canary Island Date Palm||?||10|
|Pindo Jelly Palm||?||10|
Any of the subtropical fruit trees above that dip below the high limit (old or young) will likely loose their fruit in a freeze. Some fruit, like citrus, have improved taste in a near freeze.
I hope this guide helps, leave a comment below if you have a suggestion for the table! Find out how I protect my fruit trees during a freeze.