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  • Save 50% on all Dahlias for Spring Delivery

Semi-Dinnerplate Dahlia Blue Boy

This show-stopping variety brings a completely unique color scheme to Dahlias with magnificent, purple-blue flowers. Plant Blue Boy to "cool down" a bed filled with reds and yellows.
Bag of 3

Price: $27.95

Sale: $13.98

$4.66 Per Tuber
Your Success Guaranteed

Questions?
Call 877-270-5187

Details:

Height: 36-40" tall
Bulb Spacing: 1 bulb / tuber per sq. ft.
Bloom Time: Mid summer until frost
Zones: 2, 3, 4, 5, 6, 7, 8, 9, 10
Shipping: Shipping begins in late March based on ground temperatures, warmest zones first.

Click Here for more details, product description, reviews, how-to guides and shipping information.

 
Click image for full size
Details
SKU 39DAHL3
Common Name Decorative Semi-Dinnerplate Dahlia
Botanical Name Dahlia
Zones 2, 3, 4, 5, 6, 7, 8, 9, 10
Ships As Bulb, Rhizome, Tuber
Light Requirements Full Sun
Flower Color Blue
Estimated Mature Height 36-40" tall
Bulb Spacing 1 bulb / tuber per sq. ft.
Planting Depth Bulbs/Tubers should be planted 1" to 2" below the soil line.
Bloom Time Mid summer until frost
Plant Type/Life Cycle Annual
Planting Season Spring, Summer
Will Tolerate Sandy Soil, Loamy Soil, Acidic Soil
Soil Moisture Average, Well Draining
Suggested Uses Hummingbirds & Butterflies, Containers, Cut Flowers, Borders, Showy Flowers, Extended Blooms, Easy to Grow
Additional Information Hardy in zones 8-10
Ships to Canada No
Our Master Gardeners Suggest Pairing With:
  • Tiger Lily Bulbs Black Beauty

    Tiger Lily Bulbs Black Beauty

  • Dinnerplate Dahlia Mystery Day

    Dinnerplate Dahlia Mystery Day

  • Garden Gloves

    Garden Gloves

Description
Blue Boy proves once more that there's no end to what hybridizers can do with Dahlias – Imagine these gorgeous flowers in a vase!

Why Gardeners love Dahlias: Dahlias are one of the most rewarding summer flowers of all. They're really easy to grow with spectacular results. If you know them, you know all about it. If you don't, here is the information you need. Prepare to become 'hooked.' First of all, Dahlias are great for cutting, as you can see in the large top photo of an arrangement showing a lavish deep red dahlia right next to a large, voluptuous rose. Dahlias are native to Mexico, but there's about as much resemblance between the original and the Dutch hybrids as there is between an old toy car and a brand new Mercedes. Dahlias for today's gardeners offer a really big gardening treat. The 'bulbs' are actually tubers, and look a lot like peony roots--sort of like a bunch of carrots. The plants grow quickly and some grow quite tall, always with lush deep green foliage.

Types of Dahlias: These plants have been hybridized into various heights from short bedding plants to tall bushy ones. But they are officially categorized by flower type or shape. The term, 'Dinnerplate Dahlia' is probably the most famous description, and though all gardeners use the term, it is not an official classification. 'Dinnerplates' are, simply put, the large plants with the huge flowers. The always-double flowers are up to 8', sometimes a whopping 10' across, so the name makes sense. Here are the official classifications:

'Decorative Dahlias' This group includes the Dinnerplates and also other taller (to 4 ft.) plants with double, chrysanthemum-like flowers. The famous 'Shogun Dahlias' are as tall as Decoratives, but have very heavy bloom of smaller bi-colored flowers for gardeners who want a large bushy plant covered with color.

Growing Dahlias: All the gardener needs to do is plant the tubers after spring frosts in good garden soil with full sun. It's best to position them against a wall or be ready to stake them, since they are brittle, and must be protected from high winds. (If you've grown perennial Delphiniums, the plant size and growth is similar, but success with Dahlias is much easier.) Keep them free of bugs, well-watered, and well-fertilized as they grow, and your dahlias will begin to set buds by midsummer and be in full bloom, usually during July or August. Then the huge flowers keep coming until frost. When frost threatens, just pull the roots up, cut off the stems, and store the tubers until the following spring. Each fall, you'll be amazed how the 'bulbs' have multiplied during the summer, giving you more and more to divide and enjoy the next year.

One expert has said, 'Never have so many gardeners received so much for so little work, as when they grow dahlias.''

Our Master Gardeners Suggest Pairing With:
  • Tiger Lily Bulbs Black Beauty

    Tiger Lily Bulbs Black Beauty

  • Dinnerplate Dahlia Mystery Day

    Dinnerplate Dahlia Mystery Day

  • Garden Gloves

    Garden Gloves

Reviews

REVIEW SNAPSHOT®

by PowerReviews
Semi-Dinnerplate Dahlia Blue Boy
 
3.1

(based on 9 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (3)

56%

of respondents would recommend this to a friend.

Reviewed by 9 customers

Sort by

Displaying reviews 1-9

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1.0

No where near the color!!!!!

By Annie

from PA

About Me Avid Gardener

Pros

    Cons

    • Small In Size
    • Unattractive

    Best Uses

    • Garden

    Comments about Semi-Dinnerplate Dahlia Blue Boy:

    The color of this dahlia says "blue boy" but all I got was a white and pink striped dahlia that grew blooms 4 inches is size. Beyond dissapointed in this company.

    • Primary use:
    • Personal
     
    4.0

    Rich, deep, magenta rather than lavender

    By Nikki Georges

    from Loveland, CO

    Verified Reviewer

    Pros

    • Long Lasting Cut Flowers
    • Strong Straight Stems

    Cons

    • color not as expected

    Best Uses

    • Border

    Comments about Semi-Dinnerplate Dahlia Blue Boy:

    I gave this a high rating because the plant quality was so superior. In my garden the color was very deep, rich, magenta; with wonderful color fast quality. Since I already had a plant with a similar color now I have to throw that plant away and order more. This is definitely a keeper.

    • Was this a gift?:
    • No

    (1 of 1 customers found this review helpful)

     
    5.0

    Abundance of eye catching flowers

    By mbabbitt

    from Bothell, WA

    Verified Reviewer

    Pros

      Cons

        Best Uses

          Comments about Semi-Dinnerplate Dahlia Blue Boy:

          One of my favorites. Not exactly blue, more of a lavendar. but definitely closer to the blue side of the color spectrum. I grow in containers and it has many, many blooms and works well in a bouquet.

          • Was this a gift?:
          • No

          (3 of 3 customers found this review helpful)

           
          5.0

          FANTASTIC!

          By Virginia Lady

          from Blacksburg, VA

          Verified Reviewer

          Comments about Semi-Dinnerplate Dahlia Blue Boy:

          This flower is gorgeous! It has long stems and my latest flowers have been 7.5" in diameter. This is the second year for this one. I thought the bulb looked to be in poor condition when I unpacked it in the spring, but I planted it any way. What a beautiful reward I received. It should have been named "Lavender Boy" because it certainly is not blue.

          (3 of 3 customers found this review helpful)

           
          4.0

          great grower

          By Andy

          from Northern NJ

          Verified Reviewer

          Comments about Semi-Dinnerplate Dahlia Blue Boy:

          Flower is a great grower. The plant got much larger than than i had expected. It has a very long bloom time and great color.

          (1 of 1 customers found this review helpful)

           
          3.0

          Large & Pretty

          By Dreamweava

          from N. Kingstown RI

          Verified Reviewer

          Comments about Semi-Dinnerplate Dahlia Blue Boy:

          Flowers large & darker than expected but still very pretty however out of 6 bulbs only 2 bloomed-disappointing & therefore cant recommend

           
          1.0

          dead dahlia

          By mag

          from Smyrna, TN

          Verified Reviewer

          Comments about Semi-Dinnerplate Dahlia Blue Boy:

          My Dahlia purchase grew about one foot and then died. The white Dahlias I purchased are excellent and are huge.

           
          1.0

          No show

          By disappointed gardener

          from Russellville, AR

          Pros

            Cons

            • Not a grower

            Best Uses

              Comments about Semi-Dinnerplate Dahlia Blue Boy:

              this plant never even sprouted, it was planted same time as other dahlia's that grew but this one didn't. it's a shame was looking forward to seeing in full bloom

              (3 of 3 customers found this review helpful)

               
              4.0

              Blue Boy Dahlia

              By Anna

              from Providence, RI

              About Me Avid Gardener

              Verified Reviewer

              Pros

              • Long Bloom Time
              • Low Maintenance
              • Pest Resistant
              • Reliable Growth

              Cons

              • Colors Not As Expected

              Best Uses

                Comments about Semi-Dinnerplate Dahlia Blue Boy:

                The color of the flowers is much deeper purple than was on the picture. Other than that it's a pretty dahlia.

                Displaying reviews 1-9

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                1
                How-To Guides
                Our Master Gardeners Suggest Pairing With:
                • Tiger Lily Bulbs Black Beauty

                  Tiger Lily Bulbs Black Beauty

                • Dinnerplate Dahlia Mystery Day

                  Dinnerplate Dahlia Mystery Day

                • Garden Gloves

                  Garden Gloves

                Shipping

                Shipping begins in late March based on ground temperatures, warmest zones first.

                View Shipping Rate Chart

                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 ‘Details’ tab 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, there is no additional shipping charge. See our Shipping Information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or Contact Us by email.

                Our Master Gardeners Suggest Pairing With:
                • Tiger Lily Bulbs Black Beauty

                  Tiger Lily Bulbs Black Beauty

                • Dinnerplate Dahlia Mystery Day

                  Dinnerplate Dahlia Mystery Day

                • Garden Gloves

                  Garden Gloves

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