Genus of flowering plants, also known as Hortensia.

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hortensia and brown leaves

I have an hortensia which is getting more and more brown leaves (see pictures) Ground seems OK (not dry). Any idea on a possible cause? Edit I am using tap water as I did for years, the same I ...
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1answer
48 views

How do I treat a Hydrangea?

We have three hydrangea bushes. We didn't trim the dead sticks on them because of so many stories being told to us saying yes, trim them back because it will help them bloom more; and no because the ...
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2answers
60 views

Can flowers change colour after forming?

I'm actually studying for a chemistry exam, and in the Wikipedia page for Hydrangeas, it states that In these species the color (flower) is affected by soil pH. So the plant evidently takes the ...
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2answers
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How do I dry Hydrangeas to preserve as much color as possible?

I have blue to purple hydrangeas and would like to dry them. I have tried hanging them upside down, standing in a vase, cutting and rinsing the stems then drying in a vase. Nothing seems to leave as ...
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5answers
118 views

Why isn't my hydrangea producing flowers?

My hydrangea is very leafy, but not producing flowers. Should I be adding something to the soil? This is the second consecutive year and I am totally perplexed. Appreciate any and all assistance. ...
3
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1answer
210 views

Is the moisture sensor reading correct in my self-watering vase?

I have an hydrangea in a «self watering» vase (a Lechuza Cube) and I use a Parrot Flower Power to monitor soil moisture. The soil moisture level sensor stays constant (17%-18%), watering the vase ...
2
votes
1answer
271 views

Why are my hydrangea flowers dying, but the leaves look OK?

I bought some Hydrangeas in pots in full flower. They were then left un-watered. They are now suffering from dead flowers but the leaves look OK. It is now August in North Yorkshire. Any ideas what I ...
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3answers
568 views

How should I deadhead a Hydrangea?

How do I remove the dead flowers on my Hydrangea? Do I just cut them off at the bottom of the dead flower bloom? Please advise what and how I should handle the hydrangea flowers after they turn brown.
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1answer
252 views

Why did hydrangea flowers change from pink to light yellowish/brownish green?

We have a hydrangea in its second season planted outside (New York region). The plant gets a lot of sun for most of the day. The plant had pink flowers the first season and the beginning of this ...
2
votes
1answer
708 views

Dealing with Hydrangea with dark green flower tips and wilting leaves

I had a pot of hydrangeas for a few months which I keep outside. I water them twice a day: in the morning and in the early/late evening. They receive little to no direct sunlight - which according to ...
6
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1answer
1k views

What Should I look (out) for when purchasing a hydrangea plant?

I was about to buy a potted hydrangea as a last minute gift. I looked at the stem and it appeared dry, brittle and brown at the base of the plant. It's nice and green and firm near the heads of the ...
7
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1answer
695 views

How do I prune my mop-head hydrangea?

I have a five year old Annabelle Hydrangea that is getting bushy. I have lightly pruned it in the past, but I don't know really know how I am supposed to do it. It is about 4' high and 6' wide. How do ...
10
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2answers
4k views

How do I change the color of my hydrangea flowers?

So, I've heard that people sometimes mix a bit of lemon juice in when they water blue hydrangeas, they say it keeps them blue if the soil is lacking in acid. I was wondering, I have a pink indoor ...
17
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2answers
55k views

Should I remove the dead flower heads from my hydrangea?

Earlier this year, I bought a hydrangea (from Ikea of all places!) and planted it out in the garden. It flowered nicely for a while, but the flowers have pretty much finished now and nearly all of the ...