When can I plant Helianthemum in Zone 13b

Before planting it is a good idea to find our USDA Zone info to determine our garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

One way of making a decision about when you can plant helianthemum is to examine the USDA zone info for Zone 13b.


Planting Calendar for Helianthemum

Frost tolerance for helianthemum: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

You can plant helianthemum just a bit earlier in the year because they are moderately cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant helianthemum
Possibly ok, but a risky time to plant helianthemum
Probably not a good time to plant helianthemum

The earliest that you can plant helianthemum in Zone 13b is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant helianthemum and expect a good harvest is probably November. You probably don't want to wait any later than that or else your helianthemum may not have a chance to really do well. Starting your helianthemum indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Zone 13b it never frosts. It might get as low as 65°F during the coldest months of winter.

Keep in mind that USDA zone info for Zone 13b is just an average and our actual date of last frost will vary from year to year. Since it never frosts in Zone 13b you do not have to be ready to cover your helianthemum in the event of a surprise late frost.

USDA Zone Info for Zone 13b

Here is the info for USDA Zone 13b.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low65°F
Highest Expected Low70°F

This means that on a really cold year, the coldest it will get is 65°F. On most years you should be prepared to experience lows near 70°F.

Plants to Grow in Zone 13b

You may be interested in our other planting guides for Zone 13b.