The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

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

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 do well in cold.

The earliest that you can plant lavender cotton in Renton 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. Any later than that and your lavender cotton may not have a chance to really do well. You can get started a few weeks earlier by starting your lavender cotton indoors.

Last Frost Date

On average the last frost is on March 15 in Renton. You should expect an average low temperature of 15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Renton is an average and the actual date of last frost is different every year. Since half of the time in Renton you get a frost after March 15 be ready to protect your lavender cotton in the event of a surprise late frost.

USDA Zone Info for Renton

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 Renton

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