Dahlias are a must-have in any cutting garden. With varieties ranging from perfectly round pom poms to striking single petals with dark foliage, they're simply irresistible.
Successful dahlia cultivation comes down to a few key practices. Techniques like deadheading spent blooms throughout the season can extend their flowering period. Additionally, properly storing tubers over winter ensures you can replant them in spring. One effective method to maximize blooms is to pinch out the growing tips.
As someone who's nurtured dahlias for nearly a decade, I can attest to the benefits of pinching out. It's helped me increase the flower yield on each plant significantly. Here are my best tips for boosting your dahlia production.
Understanding Pinching Out
Pinching out refers to removing the growth tip from a plant to promote the development of side shoots. This technique helps create bushier plants that yield more flowers and extend their blooming period.
It can feel strange to snip the top off a thriving plant, but the results are worth it. Once you see how it enhances plant growth, you'll become a believer in this technique.
Timing for Pinching Out Dahlia Plants
Wait until your dahlia plants have at least three sets of leaves on the main stem before you start pinching out the tips. This ensures they've had enough time to establish strong foliage.
Typically, this occurs when the plant reaches about 10 inches in height. Once you see three healthy leaves, you can safely pinch out the growth tip. Doing it too early can hinder growth, while waiting too long may limit recovery time for side shoots.
Steps to Pinch Out Dahlias
Always use sharp and clean pruning tools to ensure a precise cut and to avoid spreading disease among your plants.
If your plants are small, you can use your fingers for this task, but I prefer the precise cut from snips like these, from Amazon, which make the job much easier.
Identify the central bud at the top of the main stem. This is where you'll cut. Make your snip just above a set of leaves to encourage the plant to redirect its energy to form side shoots. Each set of leaves can lead to two new stems, resulting in significantly more flowers from each tuber.
After pinching out, you'll notice new lateral stems emerging within days. While this process may delay blooming by about a week, it ultimately leads to more flowers blooming at different times throughout the season.
Fiskars Micro-Tip Pruning Snips
I highly recommend these snips for their ease of use and effectiveness in pinching out plants without straining your hands.
Common Questions
What if I skip pinching out my dahlias?
If you don't pinch out your dahlias, they'll still grow and bloom beautifully but may only yield two or three flowers at the top. This is fine, but if you want more blooms, pinching out is essential.
Can pinching out harm dahlias?
Pinching out is safe for dahlias and other plants when done correctly. However, pinching too early can harm growth, and cutting in the wrong spot can also cause issues.
Additionally, waiting too long after the growing tip has widened could risk damage, as the hollow stems may allow water or pests to settle inside.
Maximizing flower production is a goal for every gardener. With this free technique, you can truly enhance your dahlia blooms. For more tips on dahlia care and propagation, explore our guides on harvesting dahlia seeds and planting dahlia tubers.
