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

In Carlsbad you can estimate when it's the best time to plant cleome by looking at the USDA zone info.

Planting Calendar for Cleome

Frost tolerance for cleome:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's a bad idea to plant cleome until after all chance of frost has passed because they require warm weather.

The earliest that you can plant cleome in Carlsbad is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant cleome and expect a good harvest is probably August. You probably don't want to wait any later than that or else your cleome may not have a chance to grow to maturity. If you are starting your cleome indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Carlsbad the average date of last frost happens on March 15. In the coldest months of winter you should expect an average low temperature of 10°F.

Since the USDA zone info for Carlsbad is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Carlsbad there is a last frost after March 15 be ready to protect your cleome if you have one of those late frosts.

USDA Zone Info for Carlsbad

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Carlsbad

You may be interested in your other planting guides for Carlsbad.