One of the best tools that you have as gardeners to help us estimate 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.

In Walnut Creek you can determine when you can plant tropical water plants by using the USDA zone info.

Planting Calendar for Tropical Water Plants

Frost tolerance for tropical water plants:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You should not plant tropical water plants until after the last frost has passed because they require warm weather.

The earliest that you can plant tropical water plants in Walnut Creek is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant tropical water plants and expect a good harvest is probably September. You probably don't want to wait any later than that or else your tropical water plants may not have a chance to grow to maturity. You can get started a little bit earlier by starting your tropical water plants indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Walnut Creek. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Walnut Creek may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Walnut Creek there is a last frost after February 15 so always be ready to protect your tropical water plants in the event of one of those late frosts.

USDA Zone Info for Walnut Creek

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Walnut Creek

You may be interested in your other planting guides for Walnut Creek.