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.

It's a good idea to estimate when it's possible to plant bunching onions by referring to the USDA zone info for Hawaiian Gardens.

Planting Calendar for Bunching Onions

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

Since bunching onions are barely cold tolerant you can plant them just a tiny bit earlier in the year than more sensitive plants.

The earliest that you can plant bunching onions in Hawaiian Gardens 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 bunching onions and expect a good harvest is probably September. Any later than that and your bunching onions may not have a chance to really do well. If you are starting your bunching onions indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Hawaiian Gardens. In the coldest months of winter you should expect an average low temperature of 35°F.

Always keep in mind that USDA zone info for Hawaiian Gardens may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Hawaiian Gardens last frost occurs after January 31 so be sure to be ready to protect your bunching onions if you have one of those late frosts.

USDA Zone Info for Hawaiian Gardens

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Hawaiian Gardens

You may be interested in your other planting guides for Hawaiian Gardens.