One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of making a decision about when it's the best time to plant alyssum is to look at the USDA zone info for Duncanville.

Planting Calendar for Alyssum

Frost tolerance for alyssum:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Alyssum are very cold tolerant which means that you can get them planted much earlier than more sensitive plants.

The earliest that you can plant alyssum in Duncanville 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 alyssum and expect a good harvest is probably September. If you wait any later than that and your alyssum may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your alyssum indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Duncanville. It might get as low as 10°F during the coldest months of winter.

Keep in mind that USDA zone info for Duncanville is an average and the actual date of last frost is different every year. Half of the time in Duncanville it frosts late in the year after March 15 so make sure that you are ready to cover your alyssum in the event of a surprise late frost.

USDA Zone Info for Duncanville

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 Duncanville

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