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How To Keep My Outdoor Dahlias Alive During Spring Frosts

Hello friends,

We're at the time of the year when the days are getting longer and warmer, and my dahlias in the ground are starting to wake up and poke their heads above ground. This is a good thing, but it is also very stressful because spring weather in Dunedin can be quite fickle.


It used to be that you could plant temperature sensitive crops of all types in Dunedin at Labour weekend, which is in the third weekend of October. But for the last three years we either have had a snowfall in the last week of October, or we have a very late frost in the first week of November. As this is a death sentence for any dahlia growing in the garden, I've had to come up with a frost protection method which will work for all my dahlia plants.

Over the last couple of years I've tried frost clothing my dahlias, but this method is prone to the wind blowing the frost cloth off overnight before the frost at dawn. So I've had to resort to a more brute force method of protecting my dahlias. After many trials, I finally settled on using a lot of small, cheap buckets, placing them on top of the dahlias on risky nights, and holding them in place with a spare piece of firewood.

It's not a very pretty method, but it does the trick. It does take a lot of work though, going around each night putting buckets on dahlias, and then the next morning removing them when the temperature rises. Larger buckets are needed to protect the dahlias as they get bigger. Then there is the problem of running out of buckets if too many dahlias are above ground, and I'm not proud to admit this, but that's when I resort to raiding the kitchen cupboards for ice cream containers and mixing bowls...

I used to go around with a wheel barrow collecting up all the buckets and firewood each day, and then redepositing them each night, but now I've gotten lazy, and leave them sitting beside each dahlia all the time for easier distribution. It may make the garden ugly looking for about a month, but I can totally live with that.

The whole process is a giant pain in the ass, but it's completely worth it in summer when my garden is filled with flowering dahlias.

Have a wonderful day

Julie-Ann

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