Symphytum grandiflorum Hidcote Blue
Blue Flowered Ornamental Comfrey
|Zones||4 - 9|
10 to 20"
20 to 30"
30 to 40"
|Mature Height||13" tall|
|Mature Spread||24" wide|
|Bloom Time||Early spring|
|Shipping||No longer available this season. Learn More…|
|Size||Plant - 5" Deep Pot|
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).