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Blue hydrangeas

HHassist's picture
HHassist

I tried an experiment with two blue hydrangea plants -- everyone says that they can't grow in the area we live in, but I planted them last summer, covered them up over the winter, and I can now see some little buds coming out. So it looks like they survived the winter and I'll have some blooms this summer :)

I'm looking for info on two things:

(1) I read somewhere that hydrangeas sprout new growth from the dead growth. Does this mean that I should leave all the dead branches from last year on the plant??

(2) How do I make sure the flowers are blue?? I buried rusty nails in the dirts around the plants -- the iron from the rust presumably helps with the colour. I think I read somewhere that aluminium something-or-other will also make the flowers blue. Does anyone know exactly what I need to use??

Sorry, I don't know much about gardening!!

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Anonymous's picture
Anonymous

Wow, that's so cool that the grapes made the hydrangeas purple!!

I'm really getting excited -- there are lots of buds coming up on both of my blue hydrangeas :) They all seem to be coming out of the ground, whereas my peegee hydrangea has buds coming off of the old dead growth.

Can't wait till the flowers bloom!!

Anonymous's picture
Anonymous

Thanks for the info on hydrangeas. That web site has so many beautiful different hydrangea plants!!

I'm in zone 4, I think. But there are at least 4 houses in our neighbourhood that have blue and pink hydrangeas growing in their front yards, so I know they CAN grow here, even though most hydrangea plants seem to be for zones 5 and up.

The experiment continues.... will the flowers be blue?! Fingers crossed!!

Anonymous's picture
Anonymous

I keep a book of garden notes and I had written down "to brighten the colours of hydrangeas feed them a dilute solution of blood meal (not bonemeal). 1 oz. of bloodmeal to every five gallons of water.

I seem to remember when I wrote this down that the show I was watching was talking about blue hydranges. I hope this works!

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