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

You can determine when it's possible to plant salpiglossis in Hempstead by looking at the USDA zone info.

Planting Calendar for Salpiglossis

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

Since salpiglossis are not cold tolerant it is important to wait until after all chance of frost has passed before you can plant them.

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

Last Frost Date

The average date of last frost is April 15 in Hempstead. In the coldest months of winter you can expect an average low temperature of 5°F.

Since the USDA zone info for Hempstead is just an average the actual date of last frost is different every year. Since half of the time in Hempstead you get a frost after April 15 be ready to cover your salpiglossis in the event of a surprise late frost.

USDA Zone Info for Hempstead

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Hempstead

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