One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant balsam in Redwood City should be estimated by using the USDA zone info.

Planting Calendar for Balsam

Frost tolerance for balsam:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's a bad idea to plant balsam until after the last frost because they require warm weather.

The earliest that you can plant balsam in Redwood City 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 balsam and expect a good harvest is probably September. Any later than that and your balsam may not have a chance to grow to maturity. Starting your balsam indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Redwood City the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Redwood City and it changes from year to year. Half of the time in Redwood City you get a frost after February 15 so make sure that you are ready to cover your balsam if you have a late frost.

USDA Zone Info for Redwood City

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Redwood City

You may be interested in your other planting guides for Redwood City.