The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Woburn you can estimate when it's the best time to plant ornamental grasses by looking at the USDA zone info.

Planting Calendar for Ornamental Grasses

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

Ornamental Grasses can survive in very little cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

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

Last Frost Date

The average date of last frost is April 15 in Woburn. In the coldest months of winter you should expect an average low temperature of -10°F.

Keep in mind that USDA zone info for Woburn is not always accurate and the actual date of last frost changes from year to year. Half of the time in Woburn there is a last frost after April 15 so make sure that you are ready to protect your ornamental grasses if you have one of those late frosts.

USDA Zone Info for Woburn

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Woburn

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