Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when you can plant streptocarpella is to refer to the USDA zone info for Hermiston.

Planting Calendar for Streptocarpella

Frost tolerance for streptocarpella:	Not tolerant of frost.
When to plant:	After the last frost.

Since streptocarpella require warm weather it's important to wait until after the last frost has passed before you can plant them.

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

Last Frost Date

On average the last frost has passed is on April 15 in Hermiston. You should expect an average low temperature of 0°F in the coldest months of winter.

Always keep in mind that USDA zone info for Hermiston may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Hermiston there is a last frost after April 15 be ready to protect your streptocarpella if you have a surprise late frost.

USDA Zone Info for Hermiston

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Hermiston

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