When to Plant Ornamental Grasses in Pasadena, CA

One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant ornamental grasses in Pasadena should be determined by reviewing the USDA zone info.

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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.

You can plant ornamental grasses slightly earlier in the year because they do ok in moderate cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant ornamental grasses
Possibly ok, but a risky time to plant ornamental grasses
Probably not a good time to plant ornamental grasses

The earliest that you can plant ornamental grasses in Pasadena is February. However, you really should wait until March 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 September. If you wait any later than that and your ornamental grasses may not have a chance to really do well. You can get started a couple of weeks earlier by starting your ornamental grasses indoors.

Last Frost Date

On average the last frost is on January 31 in Pasadena. You should expect an average low temperature of 30°F in the coldest months of winter.

Always keep in mind that USDA zone info for Pasadena is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Pasadena there is a last frost after January 31 be ready to cover your ornamental grasses in the event of a late frost.

USDA Zone Info for Pasadena

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)January 31
Average Date of First Frost (fall)December 15
Lowest Expected Low30°F
Highest Expected Low35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Pasadena

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