Dinnerplate Dahlia Who Dun It

This mysterious dahlia magically changes colors from light purple to white within a single season. Who Dun It arrives on the scene as a 6" fully double bloom in a luxuriant shade of lilac, but quickly transforms to mauve, then lavender-blue, while white petals take over in the final days. Sturdy, vigorous plant produces dozens of large blooms during the long growing season. Makes a great cut flower, as well as a fine decorative statement in borders and mixed beds.

Hardiness Zones 3-10. Lift in Fall in zones 3-8
Mature Height 36 - 48 inches
Bloom Time Midsummer to first frost in the fall (Jul-Oct)
Light Requirements Full Sun
Ship AsNO.1 Clump
Deer Resistant
Cut Flower

We ship this item in Spring

Botanical Name: Dahlia decorative 'Who Dun It'

Availability: Backordered

SKU: #85780

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Product Details

Restricted States US:
AE AK GU HI PR VI
Botanical Name:
Dahlia decorative 'Who Dun It'
Ship As:
Clump
Size:
NO.1
Lift In Fall:
3-8
Suggested Uses:
Borders, Bouquets, Cut Flowers, Perennializing, Showy Flowers, Deer Resistant

Flower Color:
Purple, White
Flower Form:
6" fully double without a central disc.
Foliage Type:
Pinnate leaves with ovate leaflets
Mature Spread:
24 inches
Spacing:
24 inches

Growing Tips

Planting Instructions:
2" deep and 24" apart.
Soil Moisture:
Well drained
Will Tolerate:
Acidic Soil, Clay Soil, Loamy Soil, Sandy Soil
Pruning Instructions:
Pinching of the secondary bud will lead to larger flowers, but less of them.

Winter Care:
Dahlias are not hardy. Dig the tubers in fall and store in dry peatmoss in a cool, dry and frost free location. Dry tubers for a few days (preferably outside) before storing!
Planting Depth:
2" deep
Watering Requirements:
Average water needs. Water regularly, do not overwater.
Fertilization Requirements:
Once per year
Special Care:
Not needed

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Shipping Information

K. van Bourgondien times its shipments from Holland so that bulbs and bareroots arrive at the proper planting time (depending on climatic conditions) for each area of North America.

We take advanced orders, and as the crops are harvested, our staff of K. van Bourgondien experts makes an on-the-spot selection of the finest bulbs available to fill those reservations.

We will pack and ship your order based on the following schedules. The type of product you order or the weather may affect the anticipated shipping schedule. Please note that we cannot ship outside of the 48 contiguous states. What zone am I in?

Spring 2025 Shipping Schedule

Bulbs and Bareroot
Zones	Shipping Dates	Last Order Date
3A-5A	4/28/25 - 5/30/25	5/26/25
5B	4/7/25 - 5/30/25	5/26/25
6A	3/24/25 -5/30/25	5/26/25
6B	3/10/25 - 5/30/25	5/26/25
7A	2/24/25 - 5/30/25	5/26/25
7B-8A	2/17/25 - 5/9/25	5/5/25
8B-9A	2/10/25 - 5/9/25	5/5/25
9B-11B	2/3/25 - 5/9/25	5/5/25

Shipping Notes:

In all cases, we choose the fastest, most efficient way to send your orders via USPS or FedEx.

Orders for gift certificates will be shipped immediately.

Due to hot weather conditions, we are unable to ship any plant items from late June through August. General merchandise will be shipped with your plant order.

Upon placing your order, you will receive an email confirmation with the details of your order and a shipping estimate. You will also receive an email notification when your order actually ships with an updated arrival estimate. If you have ordered multiple items, you may receive them in more than one shipment. We will send you a separate email confirming each shipment. Large orders may be shipped in more than one package. Your order confirmation will have an estimated shipping time.

You may check your order status at any time on this website using your email or account number provided on your order confirmation.

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Dinnerplate Dahlia Who Dun It