One of the first steps you take when you are making a decision about 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.

You should be able to figure out when it's a good idea to plant lemon grass by checking out the USDA zone info for Gaithersburg.

Planting Calendar for Lemon grass

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

Lemon grass do ok in moderate cold which tells us that you can get them planted just a bit earlier than plants that are more sensitive to the cold.

The earliest that you can plant lemon grass in Gaithersburg 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 lemon grass and expect a good harvest is probably August. Any later than that and your lemon grass may not have a chance to really do well. You can get started a little bit earlier by starting your lemon grass indoors.

Last Frost Date

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

Since the USDA zone info for Gaithersburg 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 Gaithersburg last frost occurs after April 15 so make sure that you are prepared to cover your lemon grass if you have a late frost.

USDA Zone Info for Gaithersburg

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 Gaithersburg

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