Robert Swanson Oriental Trumpet Lily
Oriental Trumpet Lily ‘Robert Swanson’ is one of our favorite Oriental Lilies, with its big striking red blooms (up to 7"), edged in a buttery yellow. Its light-green stigmas add another layer of contrast for a mid to late summer show that’s perfect in your perennial plant bed. Long-lasting and sweetly fragrant, the flowers (up to 40 per bulb!) make lovely cut flowers as well as pollinator friendly additions to the garden.
|Zones||3 - 8|
|Mature Plant Size||36-44" tall|
|Bulb Spacing||4 bulbs per sq. ft.|
|Bloom Time||Mid to late summer|
|Shipping||No longer available this season. Learn More…|
|Size||Bag of 3|
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).