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 Old Westbury you can figure out when it's possible to plant salpiglossis by checking out the USDA zone info.

Planting Calendar for Salpiglossis

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

Salpiglossis do not do well in cold weather which means that you have to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant salpiglossis in Old Westbury 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. You probably don't want to wait any later than that or else your salpiglossis may not have a chance to fully mature. If you are starting your salpiglossis indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Old Westbury. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Old Westbury is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Old Westbury you get surprised by a frost after April 15 be ready to cover your salpiglossis in the event of a late frost.

USDA Zone Info for Old Westbury

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 Old Westbury

You may be interested in your other planting guides for Old Westbury.