The Pearl Double Tuberose (Polianthes)

Double Tuberose (Polianthes) is a double-flowered cultivar, also known as The Pearl, and has fragrant, creamy-white flowers on tall stems above clumps of grass-like foliage. Double Tuberose is a wonderful cut flower for long-lasting flower arrangements. Perfect for patio pots. 24-36" tall.
Zones7 - 10
Extended Bloom Time (more than 4 weeks)
Easy To Grow
Good For Cut Flowers
Fragrant Flower / Foliage
Good For Containers
Light Requirements
Full Sun
Mature Spread 24-36" tall
Bulb Spacing3 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).

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24-36" tall. Double Tuberose (Polianthes) is a double-flowered cultivar, also known as The Pearl, and has fragrant, creamy-white flowers on tall stems above clumps of grass-like foliage. Double Tuberose is a wonderful cut flower for long-lasting flower arrangements. Perfect for patio pots. Plant in well-drained soil in full sun in spring once soil temperatures reach 60 degrees Fahrenheit and all danger of frost has passed. Cold hardy in zones 7-10; grow as an annual in colder zones. Continue planting every two weeks through the end of July to extend blooming throughout summer.
More Information
Common Name
The Pearl Double Tuberose
Botanical Name
Polianthes tuberosa The Pearl
Item Package Size
Bag of 3
Flower Color
Light Requirements
Full Sun
Bloom Time
Mid to late summer
Days To Bloom
90-120 days after planting
Mature Height
24-36" tall
Bulb Spacing
3 bulbs per sq. ft.
Flower Bulb Size
7-9 cm
Planting Depth
Plant tubers horizontally (laying flat) 2" to 3" below the surface.
Soil Type
Average Soil, Sandy Soil, Compost Enriched Garden Loam Soil
Soil Moisture
Ideal Region
Southeast, Pacific Northwest
Extended Bloom Time (more than 4 weeks), Easy To Grow, Good For Cut Flowers, Fragrant Flower / Foliage, Good For Containers
Additional Information
Can be grown as an annual in zones 3-6. Cold hardy in zones 7-10.
7, 8, 9, 10
Ships As
Bulb, Rhizome, Tuber
Poisonous or Toxic to Animals
Minor Toxicity
Planting Time
Spring / Summer
Ships To Canada
Planting Guides
Plant in fertile, compost-enriched well-drained soil in a sunny to light shade location in the spring once danger of frost has passed. Planted in the spring, they will usually flower in late summer. With a head start indoors, or if they overwinter, they may start flowering by early summer. Hardy in zones 8-10, Tuberose flowers best when the bulbs are lifted in the fall even where hardy, and stored to be re-planted in the spring. After flowers are spent and foliage is yellowed, simply dig the bulbs and dry them for 7-10 days. Store in a cool (50°F) location and re-plant after the danger of frost has passed in the spring. For earlier flowers in northern areas, start your Tuberose indoors for an early start to sweet fragrance and lovely flowers.
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.

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Canadian Shipping Charges

Merchandise Shipping
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$25 to $49.99$19.95
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