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

The first opportunity to plant nasturtium in Happy Valley should be determined by using the USDA zone info.

Planting Calendar for Nasturtium

Frost tolerance for nasturtium:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably not a good idea to plant nasturtium until after the last frost because they do not do well in cold weather.

The earliest that you can plant nasturtium in Happy Valley is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant nasturtium and expect a good harvest is probably August. You probably don't want to wait any later than that or else your nasturtium may not have a chance to really do well. You can get started a few weeks earlier by starting your nasturtium indoors.

Last Frost Date

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

Since the USDA zone info for Happy Valley is just an average the actual date of last frost will vary from year to year. Half of the time in Happy Valley it frosts late in the year after March 15 so always be ready to protect your nasturtium in the event of one of those late frosts.

USDA Zone Info for Happy Valley

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 Happy Valley

You may be interested in your other planting guides for Happy Valley.