The store will not work correctly in the case when cookies are disabled.
Unsupported Browser
This website will offer limited functionality in this browser. To place an order or shop, please use one of the following browsers: Chrome, Firefox, Safari, and Edge.
Named for Hawaii’s famous volcanic landmark, Royal Hawaiian® 'Diamond Head' Elephant Ear provides incredible texture and bold accents to the summer garden. Large, glossy black, arrow-shape leaves and deep burgundy veins and stems provide excellent contrast, especially for light green and white flowers and foliage. Royal Hawaiian® 'Diamond Head' proves that flowers aren’t the only way to make an impact in garden beds and containers! PP#19939 (Colocasia)
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).
Royal Hawaiian® 'Diamond Head' Elephant Ear is an impressive jet-black stunner, whether mixed into a garden or standing alone as an incredible container accent on your deck or patio. The Royal Hawaiian® series has been developed for performance in the garden and container; each is disease resistant with fabulous foliage, interesting stems, and a tidy habit.
Elephant Ears are perennial in zones 7b-11. In cooler zones, dig and store bulbs in a dark, frost-free location over the winter months. Deer and rabbit resistant.
More Information
Associated SKUs
AM020308 AM020259 (Bag of 1) AM020260 (Bag of 10)
Common Name
Diamond Head Elephant Ear
Botanical Name
Colocasia esculenta
Patent Number
PP19939
Foliage
Dark purple to near black, glossy leaves with eye catching burgundy stems.
Light Requirements
Full Sun, Half Sun / Half Shade
Mature Height
36-48" tall
Bulb Spacing
48-60" wide
Bulb Size
9/11"
Planting Depth
Pointed tip of corm should be 1-2" below soil surface.
Soil Type
Loamy Soil, Well-Drained Soil
Soil Moisture
Average, Moist / Wet
Advantages
Deer Resistant, Easy To Grow, Good For Containers, Rabbit Resistant
Additional Information
Tender Perennial. Grow as an annual in zones 3-7, or bring indoors before frost. Can also be grown as a houseplant.
Zones
3, 4, 5, 6, 7, 8, 9, 10
Ships As
Bulb, Rhizome, Tuber
Poisonous or Toxic to Animals
All parts of the plant are poisonous if eaten raw, and may cause skin irritation. Toxic to dogs and cats.
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 (877) 309-7333 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 Charges
Up to $19.99
$6.99
$20 to $34.99
$8.99
$35 to $49.99
$10.99
$50 to $74.99
$12.99
$75 to $99.99
$14.99
$100 and Over
$16.99
Canadian Shipping Charges
Merchandise
Shipping Charges
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
If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. If you have any questions, please call us at (877) 309-7333.
)
