2025/2026 Dahlia Breeding Season Results
Hello friends,
Today I thought I'd share with you the results of the 2025/2026 dahlia breeding season.
I grew a total of 55 dahlias from seed, or as seedlings, and at the end of season only 14 dahlia seedlings remain. The number of dahlias I've kept is unusually high, and this is a result of me growing some of Floret's Petite dahlia seedlings, which I bought from Emerden last spring. They were unusually populated with promising dahlia seedlings, and this in my opinion makes buying these expensive Floret seedlings completely worth it.
To keep a track of all my seedling dahlias during the season I employed a dual system, first of all a dahlia seedling spreadsheet, and also a physical note book with a page per seedling, noting down when it flowered, what type of dahlia it was, colouring, and photos showing each dahlia in flower.
The majority of dahlia seedlings that flowered were single dahlia types, and most of those dahlias were the colour yellow. This makes sense because the single dahlia type, and the colour yellow, are both dominant in dahlia genetics according to the book "Dahlia Breeding for the Farmer-Florist and the Home Gardener". Thirty eight of the fifty five dahlia seedlings were single types, equaling a total of 69% single dahlias in my breeding experiment. Twenty seven of the fifty five dahlia seedlings had yellow flowers, or they had yellow colouring in their flowers. Both single type dahlias, and dahlias with yellow flowers, are not what I'm looking for in a dahlia in general, as they are very common, and not really interesting to me.
This dahlia seedling, SR5, is a typical yellow single dahlia flower. I don't consider it interesting at all, even though the bees love these flowers. I don't have enough space in my small garden to justify growing them every year.
And now for all the amazing dahlia seedlings I grew this last summer.
First up we have Keith Hammett Beeline II #4, a dahlia seedling from a Beeline II seed packet I bought from the dahlia breeder Dr Keith Hammett. Dr Keith Hammett doesn't have the space to grow every single seed in his breeding program, so he sells seeds packets occasionally. This dahlia is a single dahlia, but the pink to yellow ombre colour shift is just spectacular against its dark green leaves. This dahlia, KHBII #4, is very similar to Dr Keith Hammett's Mystic Sparkler dahlia, which I own and love in my garden. However, this flower is much larger, and I prefer this seedling dahlia's petal shape more, so it makes it worth keeping this dahlia for next year to see how it fares.
Next up is another Dr Keith Hammett dahlia seedling, NZ Gardener #1, which is grown from a seed packet given away by the NZ Gardener magazine. This is a yellow decorative dahlia, with great symmetry in its petals. Even though this is a yellow dahlia, I haven't seen many pure lemon decorative dahlias for sale in New Zealand, and this is the only decorative dahlia seedling I grew this year. It's worth growing for another year to see how it looks over time.
This next dahlia seedling is called Floret Bee's Choice #13 (FBC#13), AKA Pink Lemonade. This is a yellow, white, and pink anemone dahlia, with unusual domed inner anemone petals. I really love its delicate colours, and it's unusual anemone shape. This dahlia is quite pretty, and has a lot of potential. I'll be growing it for the next couple of years, to see how it develops as the tuber gets older.
The next dahlia is another Floret Bee's Choice seedling #15 (FBC#15). This is another anemone dahlia variety, and it is two toned, with pale lemon outer petals, and brighter yellow inner domed petals. I've called this one Daffodil Daze, as it reminds me of the fluffy double daffodil flowers I grow in my garden each spring.
This next seedling, SR#4, is another anemone dahlia. I'm not really sure what to think of it, but I love the purple colouring. I'm willing to grow it in my garden for another year to see if it improves.
This white collarette dahlia seedling is SR #13, which I've named Snow Dancer (named for the Snow Dancer wolf pack in Nalini Singh's Psy-Changeling book series). She's such a pretty white collarette dahlia, and since I have none growing in my garden, she will make a happy addition to my dahlia collection.
The following dahlia seedling is Floret Petite #2, a magenta on magenta collarette dahlia. This is a really pretty dahlia I bought as a seedling from Emerden Garden last spring. She reminds me a lot of the Cafe Au Lait Rose dahlia, and she also has a large flower head for a collarette dahlia. She's definitely a keeper for next year, and I've collected seed from her to see what dahlia types I get from her.
This next dahlia seedling is Floret Petite #3, which is another anemone dahlia with great potential. New flowers are a very pretty smoky peach colour, and she fades to a apricot colour as the flowers age. FP#3 is definitely another keeper, and I can't wait to see how she performs next summer.
Next up is Floret Petite #4 a stunning lemon and magenta streaked collarette dahlia with white frilly petals inside. She is a stunner in the garden, and very much appreciated by those noticing her. This dahlia probably has the most potential of all the dahlia seedlings I've grown this year. I can't wait to see her flowering again next summer. I haven't chosen a name for her yet...
Floret Petite #5 is another collarette seedling dahlia, and has pointed lemon petals, and curly white inner petals. She was growing in a bad spot in the garden, and didn't get a lot of sun, so I don't think she's grown to her full potential this year. I'm going to grow her in a better place next year, and see how she fares.
And next is Floret Petite #6, my favorite of all the dahlia seedlings I grew this past year. She is a very unusual anemone dahlia, with the outer petals colour shifting in an ombre pattern from dark to light pink, and the inner anemone petals doing the same, but with gold tips. What is also interesting is her 3D shape which is very pronounced, making her look like she's wearing a poodle skirt. She is just stunning and looks nothing like any other dahlia I've ever seen. Her colouring shifts as the flowers age.
I have also kept dahlia seedling Floret Petite #8 until next year. Unfortunately Floret Petite #6 grew beside FP#8 and completely overshadowed the dahlia seedling. Because of this, the dahlia seedling stayed quite small, and it also didn't flower this year. Due to the prevalence of great Floret Petite dahlia seedlings, my plan is to grow it for another season, to see if it has potential.
And finally we have two unknown dahlia seedlings, Unknown 2 and Unknown 4, which popped up in the back garden over summer. Their parent plant I think is Dahlia Protegee, which grows nearby them, and I think when you see the comparison photos you'll agree with me.
First up is the suspected parent plant, Dahlia Protegee, which is a Keith Hammett bred dahlia. She is an ombré magenta to salmon pink single dahlia with dark leaves. This dahlia is an absolute bee magnet all summer long.
And this is Unknown #2 dahlia seedling. She has green leaves, her petals are rounded, and her petal colouring is a deep pink ombré fading out to a baby pink outer. There are also dark pink streaks throughout her petals. When this dahlia flower ages, the light pink fades to a white shade which is really pretty.
And this is Unknown 4 dahlia seedling. She has fewer petals, green leaves, but has more of a pure pink ombré effect. There are also streaks of darker pink running through the leaves. She is also very pretty.
As you can see from these photos, they do indeed look like dahlia Protogee's daughters. I'm happy to keep these dahlias for another growing season to see how they look and change over the growing season.
Overall my dahlia breeding season was very successful. At the start of the season my hope was to grow 2 - 3 dahlia seedlings which were promising enough to keep for another season, but having 14 is a bonus. All I have to do now is store them successfully over winter, and then grow them again next spring to see how they fare. In the mean time we've already had 4 frosts, and my dahlias have all died back, and winter is fast approaching...
Have a wonderful day
Julie-Ann
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