• A close-up shot of a single Penhill Watermelon Dahlia flower, showcasing its delicate petals and vibrant colors.
  • A close-up shot of a single Penhill Watermelon Dahlia flower, showcasing its delicate petals and vibrant colors.
  • A person holding a bouquet of Penhill Watermelon dahlia flowers in a garden setting.
  • A cluster of dahlia tubers with dirt on the ready for planting.
Spring Preorder
Ships Spring 2027

Dahlia Tubers (Dinnerplate) - Penhill Watermelon

A coral beauty that is extremely tall with far-reaching blooms

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About the Variety

Key Features

Heat Tolerant
Prefers Moist Soil
Container Friendly
Attracts Bees
Attracts Butterflies
Fast Growing
Easy to Grow
Perfect for Cut Flowers
Perfect for Borders
Edible

Plant Details

BOTANICAL NAME

Dahlia

LIFE CYCLE

  • Perennial

SEED TYPE

  • Tuber

LIGHT REQUIREMENT

  • Full Sun

BLOOM SEASON

  • Summer through Late Fall

GROWTH HABIT

  • Upright

PLANT HEIGHT

  • 60 inches

PLANT TYPE

  • Dinnerplate

COLOR

  • Pink

If you want your garden to stand out this summer, the Penhill Watermelon Dahlia is for you! These unusual, vibrant blooms are quite large - they can reach up to 5 feet tall with blooms as wide as 10 inches. The coral blooms are a unique take on the traditional Dahlia and look great as cut flowers.

  • • Tender Perennial; Magnificent, Giant Blooms on Sturdy Stems
  • • Superb Cut Flower; Long-Lasting, Prolific Blooms All Summer Until Frost
  • • Thrives & produces more blooms in full sun

Planting Information

PLANTING SEASON

  • Spring

PLANTING DEPTH

  • Deep Enough to Cover with 2 inches of Soil

WATER NEEDS

  • Average

PLANT SPACING

  • 12 to 18 inches

HARDINESS ZONES

  • 7
  • 8
  • 9
  • 10
  • 11

COVERAGE

Amount Recommended Coverage
2 Bulbs / Ships in Spring Up to 0.75 Sq. Ft
4 Bulbs / Ships in Spring Up to 1.5 Sq. Ft
8 Bulbs / Ships in Spring Up to 2.75 Sq. Ft

Planting Guide

View our Dahlia Planting Guide to learn more.

Ready to Grow

We guarantee that our seeds & bulbs will be true to type and ready to thrive. If something doesn't grow as expected, we will make it right. Questions? Call us at 855-440-2929

All dahlia
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    Dahlia Tubers (Dinnerplate) - Penhill Watermelon FAQs

    What size bulbs will I receive with Penhill Watermelon Dahlia?

    Penhill Watermelon Dahlia tubers are graded No. 1, with 2 to 3 eyes per tuber.

    How big will the blooms on Penhill Watermelon Dahlia get?

    The blooms on Penhill Watermelon Dahlia grow up to 10+ inches.

    Customer Reviews

    Overall rating: 3.5 / 5 from 6 reviews.

    Customer photo review of Dahlia Tubers (Dinnerplate) - Penhill Watermelon

    I just bought these dahlias and OT lilies. I ordered them separately so they came in their own box with a few days in between. In Both orders they arrived in terrible condition. Was very disappointed with this service, dahlias are what this website is KNOWN FOR so I would at least expect my box to arrive in the shape of a square Or a rectangle. One time is a freak accident, but twice is not acceptable, as I mentioned I also got OT lilies, the shipping showed no mercy, rather it arrived in worse condition. At least when it arrived at a distribution facility they covered it in tape. They used a different tape revealing how little quality put into preparing a package. Finally, I bought “two tubers” but in the process of shipping it broke up into about 8 “tubers”. All in all I am unsatisfied with the quality care that I received and am anticipating with hope a SINGLE sprout of dahlias.

    Steel B. 1/5 Verified

    Dahlia Tubers (Dinnerplate) - Penhill Watermelon

    Store owner replied: Hello Steel! Thank you for your recent reviews of your Eden Brothers shipments! We appreciate you taking the time to report these findings so we can work closely with our Shipping Team and carriers alike to prevent such matters moving forward. We strive to ensure customers are satisfied with their purchase and are happy that we were able to rectify this issue and come to a resolution for you. We're grateful to be a part of your garden!

    The Dahlias ordered from Eden this year were horrible and none of them bloomed which is really just awful. One could understand if one did not bloom but when everything grows and nothing blooms something is radically wrong and I am not a novice gardener. I am an old lady who has been gardening for over 60 years and continue to keep two accounts professionally. Other Dahlias from other sources bloomed along with the ones that I ordered in 2022 from Eden, but nothing from them bloomed this year.

    Patricia K. 1/5

    Dahlia Tubers (Dinnerplate) - Penhill Watermelon

    Store owner replied: Hello, Patricia Thank you for your review of Eden Brothers! We are sincerely sorry to hear that your Dahlia Bulbs did not grow as expected! We reached out previously, but wanted to make sure we gave ample opportunity to resolve this issue. Feel free to reach out by phone Monday through Friday from 9am - 5pm Eastern time at 855-440-2929 or by email at service@edenbrothers.com. We'd love to hear from you!

    I wanted to try this plant last year, so i bought it during the sale, knowing that I was planting it late and would not get as many flowers, but it was worth a try. It never bloomed at all, but was in good shape when going into dormancy, so I waited. This year it came through for me and is a tall, stately plant in my cutting garden; so tall I took very long, first cuttings to balance it out a bit with neighboring dahlias. The flowers were nodding toward the ground, like sunflowers and I agree that they would be perfectly placed in the back of a border. I have only one complaint. The color isn't similar to any of the photos, but darker and each flower is less varied in color than these photos indicate. Still they make a big impression in a floral arrangement.

    Donna T. 4/5 Verified

    Dahlia Tubers (Dinnerplate) - Penhill Watermelon

    I usually choose a couple new varieties every year, and this was my pick for 2019. Upright growth (not bushy at all) with very large blooms that followed one after the other. Neighbors would often stop to comment. Recommend for back of your dahlia garden.

    Rebecca R. 5/5 Verified

    Dahlia Tubers (Dinnerplate) - Penhill Watermelon

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