The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Round Rock it's possible to figure out when it's a good idea to plant lavender cotton.

Planting Calendar for Lavender Cotton

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

You can plant lavender cotton earlier in the year because they are very cold tolerant.

The earliest that you can plant lavender cotton in Round Rock 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 lavender cotton and expect a good harvest is probably September. You probably don't want to wait any later than that or else your lavender cotton may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your lavender cotton indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Round Rock. In the coldest months of winter you can expect an average low temperature of 15°F.

Since the USDA zone info for Round Rock is not always accurate the actual date of last frost is different every year. Half of the time in Round Rock last frost occurs after March 15 so make sure that you are prepared to cover your lavender cotton in the event of a late frost.

USDA Zone Info for Round Rock

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Round Rock

You may be interested in your other planting guides for Round Rock.