One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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 Gaithersburg you can determine when it's a good idea to plant transvaal daisy by looking at the USDA zone info.

Planting Calendar for Transvaal Daisy

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

Since transvaal daisy do ok in moderate cold you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant transvaal daisy 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 transvaal daisy and expect a good harvest is probably August. Any later than that and your transvaal daisy may not have a chance to grow to maturity. If you are starting your transvaal daisy indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Gaithersburg the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of 0°F.

Keep in mind that USDA zone info for Gaithersburg is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Gaithersburg last frost occurs after April 15 be ready to cover your transvaal daisy if you have one of those late frosts.

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.