One of the first steps you take when you are determining your gardening schedule is find your 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.

In Dublin you can determine when to plant hypericum by reviewing the USDA zone info.

Planting Calendar for Hypericum

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

Hypericum do ok in some cold which tells us that you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant hypericum in Dublin 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 hypericum and expect a good harvest is probably September. You probably don't want to wait any later than that or else your hypericum may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your hypericum indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Dublin is an average and the actual date of last frost will vary from year to year. Since half of the time in Dublin it frosts late in the year after February 15 be ready to cover your hypericum if you have one of those late frosts.

USDA Zone Info for Dublin

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 Dublin

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