Photo by Melody

PlantFiles: Informal Decorative Dahlia
Dahlia 'Hamari Gold'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Dahlia (DAHL-ya) (Info)
Cultivar: Hamari Gold
Hybridized by Ensum (Great Britan); Year of Registration or Introduction: 1984

» View all varieties of Dahlias


Flower Size:
Large - 8 to 10 inches (200 to 250 mm) diameter

Bloom Color:


36-48 in. (90-120 cm)

24-36 in. (60-90 cm)


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
This plant is resistant to deer
Flowers are good for cutting
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings

Parts of plant are poisonous if ingested

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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to view:

By RosinaBloom
Thumbnail #1 of Dahlia  by RosinaBloom

By lancer23
Thumbnail #2 of Dahlia  by lancer23

By lancer23
Thumbnail #3 of Dahlia  by lancer23


2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive lancer23 On Jun 26, 2014, lancer23 from San Francisco, CA wrote:

This is a very large dahlia for me, 7-12 in across almost a dinner plate. I plant it next to my pergola so it got something to lean against for support. Very tall, chin high, color of lions mane--orange blend. I've been growing it for the last 3 yrs. Its only getting better each yr. It doesn't last as long as other dahlia in the vase because of its gigantic size. It last very long on the plant 2 weeks plus for each bloom. So I let it stay on the plant to enjoy the bloom. While other dahlia got chew up by earwigs and slugs this one they don't touch. It also doesn't mind the terrible soil I put it in.

Positive goulot On Sep 30, 2013, goulot from Canton, MI wrote:

These (three tubers) came as a bonus with an order of perennials from Holland Bulb Farm. Fortunately, I still had room to plant them (most of my other dahlias were grown from seed). They did not need staking (at least not in my garden). We had lots of rain this year, and I had used polymer water-crystals so that not much additional watering was needed.

The flowers are about 4" across, without disbudding. The stems are thick making it easy to slit them under the flower head so as to allow the water to go up inside the stem; treated that way, they last four or five days (I do not change the water every day, but I put them in the fridge at night). The flower stems are not very long; you will need a vase that is not too tall but wide at the base to balance the bouquet.

I like these so much that I plan to dig up the tubers and save them for next year.

Note: They bloomed before the Japanese-beetle season was over. None of the Hamari Gold flowers were affected; the beetles prefer dark red flowers (e.g. the Hansa roses, red dahlias) and white or blush-colored flowers. Next year, if I want red dahlias I will plant them a little later, so they will bloom after I have drowned the last beetle.


This plant has been said to grow in the following regions:

San Francisco, California
Frankfort, Kentucky
Doylestown, Pennsylvania

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