Confusion in the garden!!! … You’ve carefully labelled all your dahlias, tended them religiously, and endured the long wait and anticipation to see them bloom. As they grow, you admire their foliage and even may be thinking you know which dahlia you’re looking at without checking the label because its foliage is unique… but then the first bloom appears and its not what you were expecting! The label doesn’t match the bloom! It’s pink not red! It’s short not tall! Its a ball not a cactus! What happened?
Many things can lead to mixing up dahlia varieties. There is not just one single way that it happens, and mix ups happen to just about every grower of dahlias from time to time. Sometimes the mix ups result in happy accidents and sometimes they are disappointing – but all just part of the fun – keep calm and keep growing beautiful dahlias!
- Imported dahlias purchased from big box stores, garden centres. The vendor hasn’t grown the dahlia themselves, and so is at the mercy of their supplier to put the correct tubers in the correct packages that you buy and grow. You buy “Thomas Edison” and when it blooms it turns out to be purple but in a ball form…or pink… or white…or….everything but TE!
- Smaller domestic farm grower/resellers. Repackaging and reselling “bulk” imported tubers has become more common amongst some smaller Canadian growers in the last 5-10 years. There is opportunity for a large profit margin. These growers supplement their own farm grown dahlia supply by repackaging and reselling tubers bought in bulk or wholesale and often imported from overseas growers. (This is sort of like buying a bag of 5 dahlia tubers like what you’d get from Canadian Tire or Costco and then breaking the bag apart and selling the tubers individually for a premium). This practice created a bit of a stir in the dahlia community when customers led to believe that they were buying “farm grown” realized that the tubers bought thru online shops were not in fact farm grown. Customers now expect domestic dahlia growers to explicitly state on their websites if tubers on offer are farm grown vs imported/repackaged/resold. The same “mix up” problem presents itself as in “1” above where the vendor is at the mercy of the supplier to ensure the correct variety ends up in the hands of their customer.
- Cuttings! Growing dahlias from cuttings is a recent trend. There is lots of opportunity for mix-ups here too! Maybe you landed a single “unicorn” tuber and you’re so excited that you take 10 cuttings from this beauty with the hopes of having a garden full of unicorns…only to find out that you end up with 10 “meh” plants that don’t look anything like your unicorn. If you take cuttings from a dahlia tuber that you have not grown, there is a risk that you’ll multiply a mix-up.
- Labelling (or lack there of)! So many different methods of labelling and when to label. Labels on tubers, labels on and in storage boxes, labels on stems, labels on trays… Can there ever be enough labelling? Develop a good labelling system that works for you and refine it as needed…
- Human error! We’re all human – so be gentle with yourself and others when a mixup happens!
- ….other ways… I’m sure there’s more…like bad habits! If you’re not sure what a variety is, mark it as such… don’t mix it in with the variety you “think” it might be.
How can you keep your varieties straight?
- Make a habit of using a good labelling system. Label tubers. We label with our inventory number and the variety name… and if its a “new to us” tuber we also label it with the source.
- Map out your dahlia beds, so you know which varieties are growing where and which are next to which.
- During the growing season, when the dahlias are in full bloom is THE BEST time to discover and fix errors by reviewing your blooms to ensure they are what you expected. “Flag” anything that needs a labelling adjustment. Surveyors flagging tape is a great way to tie a label to the stalk with a note to remind you when it comes time to dig and the blooms are long gone. Just make sure you attach the flagging tape to the correct stalk!!! Using permanent markers like sharpies is OK, but know that these have a habit of fading over time outdoors. Using nursery paint or permanent indelible ink markers are a better choice because they resist fading.
- When you dig/lift the tubers in the fall, dig and process one variety at a time.
- Label storage boxes on the outside and the inside.
- If we end up with a tuber that we’re not sure about, it goes into a “mystery” bin (we might add a label to it with a “?” and the variety we think it might be)
You certainly don’t have to label your dahlias! But it really does help to know which is which when you’re planting a lot of them. Knowing the tall or vigorous from the shorter or less robust will help you when you’re planning which dahlia to plant where in your garden.
