Dahlia Diaries Episode. 3: Cutting back.

Watch Episode 3 on Instagram here

Hundreds of plants, thousands of stems, and one very satisfying job ticked off the list.

Keep firing your questions through while I keep cutting and we’ll chat digging & winter storage next episode.

FAQ’s:

When do you start cutting back?
After a killing frost, or when the stems have died back naturally. In our mild climate, I cut back in late May-early June. Episode 1 gives a good look at how the flower field looks.

Can I leave them in the ground?
YES! You do not have to dig your dahlias, especially if you’ve got well draining soil, and most of New Zealand does not get cold enough to freeze them underground.

Will my tubers rot if I leave them in the ground?
They can if your soil stays wet over winter, especially in heavy clay or poorly draining areas. Good drainage is the biggest factor, which is why some gardeners choose to lift and store their tubers instead.

Why do you dig them?
I dig them so I can divide and sell tubers throughout New Zealand. I do have some garden clumps that I keep in the ground for my own enjoyment.

Do you have to sanitise between every plant?
YES! To help prevent the spread of virus and disease. Between every plant at cutting back, dividing and when picking flower stems.

What tools do you recommend?
I am loving my new @stihl_nz battery powered secateurs ‘ASA 20’ and @buggthestorenz tool pouch to hold everything I need. I also have my favourite special spade that’s probably older than I am! #gifted

Why do you leave some stem instead of cutting to ground level?
It helps stop water tracking down into the tuber clump, plus it makes it much easier to remember where your dahlias are once everything dies back for winter.