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Decorative Dahlia Heatwave
Decorative Dahlia Heatwave
Bring all eyes to borders, walkways and entries with a living carpet of vivacious red blooms. Heatwave is a decorative type with a lot going for it. This low-growing dahlia in a bold shade of red looks amazing along a sunny border, in a decorative container garden or as a welcoming floral display near a doorway or patio. The lush, 4½" dahlias are low maintenance, yet high-impact perennials that dazzle all through summer and last until the first frost of fall. Plus, the blooms are plentiful, creating an almost solid blanket of color. Perfect in cut-flower bouquets and arrangements, too.
- Hardiness Zones 3-10. Lift in Fall in zones 3-8
- Mature Height 18 - 20 inches
- Bloom Time July - October (Midsummer until the first frost in fall)
- Light Requirements Full Sun
- Ship AsPREMIUM Bare Root
- Deer Resistant
- Container Friendly
We ship this item in Spring
Botanical Name: Dahlia 'Heatwave'
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Product Details
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Restricted States US:
AE AK GU HI PR VI -
Botanical Name:
Dahlia 'Heatwave' -
Ship As:
Bare Root -
Size:
PREMIUM -
Lift In Fall:
3-8 -
Suggested Uses:
Borders, Container Gardening, Showy Flowers, Deer Resistant
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Flower Color:
Red -
Flower Form:
4.5" fully double. -
Foliage Type:
Mid green pinnate leaves with ovate leaflets -
Mature Spread:
18 - 24 inches -
Spacing:
18 - 24 inches
Growing Tips
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Planting Instructions:
2" deep and 18 to 24" apart -
Soil Moisture:
Well drained -
Will Tolerate:
Acidic Soil, Clay Soil, Loamy Soil, Sandy Soil -
Pruning Instructions:
Remove faded flowers for a cleaner look and more, new flowers.
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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" deepWatering Requirements:
Average water needs. Water regularly, do not overwaterFertilization Requirements:
Once per yearSpecial Care:
Not needed
Plant Calculator
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.
Customer Reviews
Review Snapshot
by PowerReviews
Ratings Distribution
Best Uses
Describe Yourself
Reviewed by 13 customers
Great Bloomers
Planted these last spring, grew and bloomed great. Only issue I have is I ordered these because of the description had 18-20 inches, but they grew larger in height than described some to 30".
Great double red dahlia
Verified Buyer
Plants grew and flowered beautifully. I just dug them up today (Oct 30) after cutting flowers and buds to bring in before frost a couple days ago. Even buds opened after cutting.
Avoid in zone 8 B
Verified Buyer
Do not do well in zone 8B. Out of the 250 dahlia bulbs planted (Border Dahlias Mixed, Decorative Dahlia Heatwave, Boarder Decorative Dahlia Go Go Purple, Dark Leafed Sunshine Dahlia )in May, I only was able to harvest 60 flowers worth putting in an arrangement by October 20.
Super cute !!!
Never planted Dahlias before and wasn't sure what to expect but they exceeded our expectations. Truly beautiful colors, plenty of continuously blooming flowers. Very happy with it.
Incorrect description
These dahlias are NOT low growing, nor do they give masses of blossoms. I planted them last year. They grew almost 3 feet tall and then would fall over and break. They blossomed only when they were staked, and then hardly at all. Some plants did not blossom at all! Dahlias are supposed to be deer resistant, but the deer here found them very tasty. I had to go to extreme lengths to keep the deer away.
I will be ordering more Heatwave next year.
Verified Buyer
In spite of a wet cold Spring and a hot dry Summer, Heatwave performed better than all of my old standby varieties. It grew slightly taller than advertised which just gave it more room to continuously cover itself with gorgeous red flowers. It stood up well to several windstorms. I will be ordering more next year.
Good addition to the garden.
Verified Buyer
Vigorous plants. They have bloomed non stop all summer. Nice red flower. Hope to lift extra tubers for next year. Row of 15 plants, set 1 ft apart.
Healthy with colorful blossoms
I have the dahlias in large containers. I was expecting a low growing plant; however these are at least 18 inches tall, and I found it necessary to stake them. I expected a result more like the photo in your catalog. The leaves are being attacked by something which I have not yet identified....otherwise very healthy.
Good plant
Verified Buyer
This is doing very well, only taller than expected.
Gorgeous Rich Red
Verified Buyer
The Heatwave Dahlia are beautiful in my garden. The foliage is a deep rich green topped with gorgeous red blossoms that last for days, even in extreme heat, and then fade to a burgundy/maroon color. My Heatwave dahlia are taller than I imagined, but the fit in beautifully with the surrounding roses and other flowering plants.
Questions & Answers
Q&A
Showing 3 out of 3 Questions
- Q
What month can we grow the dahlia bulbs .is it too late to grow in May.can u please let me know.Thank you.How long will ship out if I order today?
- Asked by Hue
- Verified Reply - ViciIt normally takes dahlias around eight weeks to bloom once they have been planted. They will bloom until frost. We generally ship an order 2 - 3 weeks from when an order is placed as long as the item is not on backorder. You should receive an approximate ship date when you place your order.Was this answer helpful to you
- Q
There is no frost where I live. Will they continue to bloom?
- Asked by Patricia
- Verified Reply - AngelaYour Dahlias will still go dormant for the winter.Was this answer helpful to you
- Q
Can a Heatwave dahlia be grown in a sunroom?
- Asked by Marie
- Verified Reply - ViciHeatwave Dahlia will grow well in a sunroom. When growing dahlias in pots, water the dahlias regularly, but allow the soil to become mostly dry in between waterings while the plants are developing their root systems. Water them at their bases rather than pouring water over their foliage. When a dahlia grows to three to four inches tall, pinch off the bud at the end of the stem right above the second pair of leaves. Pinching off the terminal bud will cause the plant to form two stems instead of just one primary stem. Re-cover the plant roots with potting soil if the soil level drops and the roots become exposed. Apply a low-nitrogen fertilizer, such as a 5-20-20 ratio fertilizer, once per month.Was this answer helpful to you
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