Knowing your hardiness zone is crucial to your succulents’ health. It enables you to choose proper succulents for the weather conditions where you live.
As you already know your succulents' need and dormancy period, it is also essential to understand their hardiness zone.
According to the United States’ Department of Agriculture (USDA), succulent hardiness zone is the area in which a specific succulent genus is capable of growing. The hardiness zone has suitable weather conditions for the plants to thrive.
Generally, the hardiness zone map in the US is divided horizontally into 13 zones from the North to the South. And the rule of thumb is the further you go South, the higher the temperature is.
Succulents adapt well under sunny and dry environment. As a result, most of succulents' hardy zones are 3-9. Now you must be wondering what types of succulents are suitable for your zone.
1: From – 60 F to – 50 F
2: From – 50 F to – 40 F
3: From – 40 F to – 30 F
4: From – 30 F to – 20 F
5: From – 20 F to – 10 F
6: From – 10 F to 0 F
7: From 0 F to 10 F
8: From 10 F to 20 F
9 ¬: From 20 F to 30 F
10: From 30 F to 40 F
11: From 40 F to 50 F
12: From 50 F to 60 F
13: From 60 F to 70 F
Most areas in New York City fall to Zone 4 and 5 categories. Thus, the succulents which are suitable for New York city should be able to withstand the temperature of at least -30 F.
Succulents such as Agave, Sedum (Stonecrop), and Jovibarba can thrive well under cold weather. You just need to keep an eye on the temperature to give them a timely cover to avoid frost. If the leaves get frosted but the main plant is still fine then it may take months for the plant to recover.
California stretching over Zone 6, 7, 8, 9, and 10, with more of its area fall to Zone 8 and 9. Growing succulents in these zones is a perfect way to capture that desert feeling in your landscape.
Similar to California, most zones in Texas are 6, 7, 8, and 9. However, zone 6 and 7 account for a large part of the state.
If you are living in Zone 6, your succulents should be kept indoors when it is rainy in winter. You just need to provide enough sunlight and enough air circulation for them. And if there’s forecast of freezing temperature, outdoor succulents need some cover up to prevent frosting. Additionally, you should remove the cover when the weather allows as succulents still need sunshine and air.
The key to growing succulents successfully in any zone is choosing the right types of succulents for that weather.
You should check the outside temperature to see which types of succulents are good for cold weather in NY, hot and humid weather in Texas, hot and dry weather in California.
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