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.

Zones3 - 8
Easy To Grow
Good For Cut Flowers
Fragrant Flower / Foliage
Light Requirements
Full Sun
Half Sun / Half Shade
Mature Height 36-44" tall
Bulb Spacing4 bulbs per sq. ft.
Bloom TimeMid to late summer
Shipping DetailsNo longer available this season. Learn More…
Item Package SizeBag 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).

Find Your Planting Zone:

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36-44" tall. Oriental Trumpet Lily ‘Robert Swanson’ has eye-popping color and sweet fragrance. Its brilliant red flowers are gently recurved, edged in a buttery yellow and contrasted by the lime-green stigmas. This hardy lily with copious amounts of big 7-inch blooms is a perfect choice for easy-care, mid-to late summer color. Plant in well-drained compost enriched soil in a full to part sun location. ‘Robert Swanson’ likes to have its feet in the shade but blooms in the sun. It does not have a big footprint so it’s perfect for planting in your perennial beds. Growing 36-44 inches tall, each bulb may yield up to 40 blooms! ‘Robert Swanson’ Lilies make wonderful cut flowers. Consider roses, Agastache and late summer Salvia as companions. Cold hardy in zones 3-8.

More Information
Common Name
Robert Swanson Oriental Trumpet Lily (Orienpet Lily)
Botanical Name
Lilium Robert Swanson
Item Package Size
Bag of 3
Flower Color
Orange, Yellow
Light Requirements
Full Sun, Half Sun / Half Shade
Bloom Time
Mid to late summer
Mature Height
36-44" tall
Bulb Spacing
4 bulbs per sq. ft.
Flower Bulb Size
16-18 cm
Planting Depth
Plant 6-8" deep
Soil Type
Average Soil
Soil Moisture
Ideal Region
Midwest, West, Pacific Northwest
Easy To Grow, Good For Cut Flowers, Fragrant Flower / Foliage
Additional Information
Lilies like their feet in the shade and faces in the sun so keep them happy by planting behind or amongst other perennials for a dramatic effect.
3, 4, 5, 6, 7, 8
Ships As
Bulb, Rhizome, Tuber
Planting Time
Spring / Summer
Ships To Canada
Planting Guides

View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.

No longer available this season.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service toll-free at (800) 925-9387 or contact us by email.

Shipping Rates

Our shipping rates are calculated based on our actual average shipping costs. We do not seek to profit from shipping fees, so rest assured that our shipping rates reflect an average of what it costs to get our guaranteed products safely to your door.

US Shipping Charges

Merchandise Total Shipping
Up to $19.99$8.99
$20 to $34.99$10.99
$35 to $49.99$12.99
$50 to $74.99$14.99
$75 to $99.99$16.99
$100 and Over$18.99

Canadian Shipping Charges

Merchandise Shipping
Up to $24.99$14.95
$25 to $49.99$19.95
$50 to $74.99$24.95
$75 to $99.99$29.95
$100 and Over$39.95

We charge one low flat rate for shipping our products even if your order requires multiple shipments. If you have any questions, please call us at (800) 925-9387.

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