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

The best time to plant argyranthemum in Old Westbury can be estimated by using the USDA zone info.

Planting Calendar for Argyranthemum

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

It's a bad idea to plant argyranthemum until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant argyranthemum 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 argyranthemum and expect a good harvest is probably August. Any later than that and your argyranthemum may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your argyranthemum indoors.

Last Frost Date

The average date of last frost is April 15 in Old Westbury. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Old Westbury is not always accurate the actual date of last frost will vary 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 argyranthemum 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.