Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant sweet sultan in Carlsbad should be figured out by checking out the USDA zone info.

Planting Calendar for Sweet Sultan

Frost tolerance for sweet sultan:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since sweet sultan are barely cold tolerant you can plant them just a tiny bit earlier in the year than other frost tender plants.

The earliest that you can plant sweet sultan in Carlsbad is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant sweet sultan and expect a good harvest is probably September. If you wait any later than that and your sweet sultan may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your sweet sultan indoors.

Last Frost Date

On average the last frost is on January 31 in Carlsbad. In the coldest months of winter you can expect an average low temperature of 30°F.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Carlsbad and it can change quite a bit from year to year. Since half of the time in Carlsbad last frost occurs after January 31 be ready to protect your sweet sultan in the event of a late frost.

USDA Zone Info for Carlsbad

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Carlsbad

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