One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Roselle Park you can estimate when it's the best time to plant salpiglossis 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.

Salpiglossis are not cold tolerant which tells us that you really should wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant salpiglossis in Roselle Park 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. Any later than that and your salpiglossis may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your salpiglossis indoors.

Last Frost Date

The average date of last frost is April 15 in Roselle Park. You can expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Roselle Park may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Roselle Park you get a frost after April 15 be ready to cover your salpiglossis if you have a surprise late frost.

USDA Zone Info for Roselle Park

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 Roselle Park

You may be interested in your other planting guides for Roselle Park.