Blue Vervain Seeds
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Per Packet
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SKU
AM013549
A very ancient plant, used to make torches by the Romans. Beautiful blue spires on tall plants. Perennial.
| Zones | 3 - 8 |
|---|---|
| Advantages | |
| Light Requirements | |
| Mature Plant Size | Up to 72" tall (6 feet) |
| Bloom Time | Summer |
| Size | Packet |
| SKU | AM013549 |
USDA Hardiness Planting Zones
To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.
- If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
- If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).