All Star Penstemon Collection
|Zones||5 - 9|
10 to 20"
20 to 30"
|Mature Height||Varies:Richfield: 24-36" tallpalmeri: 4-5' tallCompactum: 10" tallCoconino County: 30-36" tallstrictus: 24-30" tall|
|Mature Spread||Varies:Richfield: 15" widepalmeri: 24" wideCompactum: 12" wideCoconino County: 18" widestrictus: 36" wide|
|Bloom Time||Mid spring to summer|
|Shipping||Shipping begins the week of February 24th, 2020 Learn More…|
|Size||Collection of 15|
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).