One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when it's the best time to plant primula is to use the USDA zone info for Cleburne.

Planting Calendar for Primula

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

Primula are very cold tolerant which means that you can plant them a quite a bit earlier than more sensitive plants.

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

Last Frost Date

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

Remember that USDA zone info for Cleburne is an average and the actual date of last frost will vary from year to year. Half of the time in Cleburne there is a last frost after March 15 so just be sure to be ready to cover your primula in the event of a surprise late frost.

USDA Zone Info for Cleburne

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 Cleburne

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