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.

A way of figuring out when you can plant delphinium is to use the USDA zone info for Woodcliff Lake.

Planting Calendar for Delphinium

Frost tolerance for delphinium:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since delphinium do ok in moderate cold you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant delphinium in Woodcliff Lake is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant delphinium and expect a good harvest is probably August. Any later than that and your delphinium may not have a chance to really do well. You can get started a couple of weeks earlier by starting your delphinium indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Woodcliff Lake. It might get as low as 0°F during the coldest months of winter.

It's important to remember that USDA zone info for Woodcliff Lake may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Woodcliff Lake you get a frost after April 15 so make sure that you are prepared to cover your delphinium if you have a late frost.

USDA Zone Info for Woodcliff Lake

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 Woodcliff Lake

You may be interested in your other planting guides for Woodcliff Lake.