One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to estimate when it's a good idea to plant crossandra by referring to the USDA zone info for Ogdensburg.

Planting Calendar for Crossandra

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

Since crossandra are not cold tolerant it is important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant crossandra in Ogdensburg is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant crossandra and expect a good harvest is probably August. If you wait any later than that and your crossandra may not have a chance to fully mature. You can get started a few weeks earlier by starting your crossandra indoors.

Last Frost Date

In Ogdensburg the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Ogdensburg may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Ogdensburg you get surprised by a frost after May 15 so make sure that you are prepared to protect your crossandra in the event of a surprise late frost.

USDA Zone Info for Ogdensburg

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Ogdensburg

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