The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant morning glory in Arcata can be figured out by using the USDA zone info.

Planting Calendar for Morning Glory

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

It's probably not a good idea to plant morning glory until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant morning glory in Arcata 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 morning glory and expect a good harvest is probably September. If you wait any later than that and your morning glory may not have a chance to fully mature. You can get started a few weeks earlier by starting your morning glory indoors.

Last Frost Date

The average date of last frost is February 15 in Arcata. In the coldest months of winter you can expect an average low temperature of 25°F.

It's important 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 Arcata and it is different every year. Half of the time in Arcata you get surprised by a frost after February 15 so always be ready to cover your morning glory in the event of a surprise late frost.

USDA Zone Info for Arcata

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 Arcata

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