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.

A way of getting a good idea when to plant garden orache is to refer to the USDA zone info for Hillsboro.

Planting Calendar for Garden Orache

Frost tolerance for garden orache:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Garden Orache are moderately cold tolerant which tells us that you can start planting them earlier than other frost tender plants.

The earliest that you can plant garden orache in Hillsboro 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 garden orache and expect a good harvest is probably September. Any later than that and your garden orache may not have a chance to fully mature. If you are starting your garden orache 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 March 15 in Hillsboro. In the coldest months of winter you can expect an average low temperature of 10°F.

It's important to remember that USDA zone info for Hillsboro is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Hillsboro it frosts late in the year after March 15 be ready to protect your garden orache in the event of a late frost.

USDA Zone Info for Hillsboro

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Hillsboro

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