Results of Overwintering Dahlias in the Ground in Zone 6 + Planting More of Them! 🌸🥰🙌

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This article is a summary of a YouTube video "Results of Overwintering Dahlias in the Ground in Zone 6 + Planting More of Them! 🌸🥰🙌" by Blossom Flower Delivery

Key insights about video Results of Overwintering Dahlias in the Ground in Zone 6 + Planting More of Them! 🌸🥰🙌

🌼 Dahlias are hardy in USDA zones 8 through 11 and need to be overwintered in colder zones like zone 6.

🌱 The experiment conducted involved mulching the dahlias heavily to see if they could survive the winter without being dug up.

🌻 Approximately 400 dahlias were planted, and by May 29th, a portion had successfully emerged from the ground.

🛑 Some dahlias did not survive the winter and showed signs of rot when inspected, indicating variable success in overwintering them in place.

🌞 A silage tarp was used to cover the dahlias during winter to prevent excess moisture, which is a common reason for tuber rot.

🌾 A combination of straw and leaves was used to create a thick insulating layer over the tarp-covered dahlias.

💦 The dahlias were watered a few times after the protective covering was removed in mid to late April.

👩‍🌾 The process of overwintering using a tarp and mulch is less labor-intensive compared to the traditional method of digging, cleaning, and storing tubers.

🏷️ It is important to label dahlia plants for easy identification as they grow and to use large, visible labels to facilitate this process.

🌱 Pinching the central stem of dahlias as they grow may encourage a more productive and well-branched plant, although it's not a practice utilized in every dahlia garden.

Timestamped Summary

00:01 Introduction of the video topic about tackling The Dahlia Patch in the Cut Flower Garden.

00:08 Discussion of dahlias being zone 8 through 11, but the garden is actually in zone 6, which typically requires dahlias to be dug up and stored each year.

00:48 Observation of the different growth stages of dahlias, some are huge while others are just starting to pop through the ground.

01:45 Explanation of overwintering experiment: using silage tarp to protect dahlias from winter moisture and mulch on top.

02:18 Mention of the process used last fall to prepare dahlias for overwintering, involving silage tarps and layers of straw and leaves.

03:27 Stats provided on the dahlia patch; out of 405 dahlias planted, 189 came up, and 75 were dug up from previous year for storage.

04:18 Showing potted dahlias 'Poo' and 'Smartypants' that were saved from the last season.

05:00 Consideration of the cost of labor to dig up tubers versus the loss of plants when left in the ground over winter.

05:44 Plan to make use of overwintered dahlias alongside the new varieties ordered from Floret, Eden Brothers, and those received from a viewer.

06:49 Discussion about what worked best for overwintering and the decision to use silage tarps to protect tubers from rodents.

07:30 Decision to continue with the same overwintering process and take the opportunity to try out new varieties.

08:19 Showing of the different varieties that will be planted in The Dahlia patch.

14:26 Planting begins for new tubers in the dahlia patch.

17:24 Watering of newly-planted dahlias and the greenhouse plants that have been potted up.

19:29 Review of the layout after all dahlias are planted, marked, and watered in, with consideration for future care.

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Q&A

Can dahlias be overwintered in zone 6?

Typically, dahlias must be dug up, stored, and replanted each year in zone 6 due to its cold temperatures. However, an experiment with heavy mulching showed that a significant number of dahlias did survive the winter without being dug up.

What is the recommended spacing for planting dahlias?

Dahlias should be planted with roughly a 12-inch spacing, though 12 to 18 inches is also acceptable.

Should dahlia tubers be watered immediately after planting?

While some guides advise against watering until green growth appears, in typically dry areas like high deserts, it's common to water them in initially. Then careful monitoring is maintained to prevent the soil from staying too wet.

Is it helpful to pinch dahlias?

Pinching or cutting out the central stem is often recommended by growers as it can produce a more well-branched and prolific plant. However, it is not always necessary for personal gardens if dahlias are already producing well.

What do you do if dahlia tubers are leftover after planting?

If there are additional dahlia tubers after the garden has been planted, they can be given away or used to fill any remaining gaps in the garden.

How deep should dahlia tubers be planted?

Dahlias tubers should be planted approximately four to six inches deep, with the tuber laid on its side and the growth point facing up.

How can you identify viable dahlia tubers?

You can identify a viable dahlia tuber by checking if it has a firm body, a neck, and a visible growth point or eye. If the tuber is still firm and the growth point intact, it is likely viable.