Plant ID forum: Is this a hydrangea?

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Texas (Zone 8a)
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GrammaChar
Oct 20, 2017 10:58 PM CST
This photo was taken in Sitka, Alaska during a recent trip. Because these plants don't grow in central Texas, I don't know the name. Any help would be appreciated. Thank you!




GrammaChar
Name: Tofi
Sumatera, Indonesia
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tofitropic
Oct 20, 2017 11:53 PM CST
Yes, a Hydrangea macrophylla, there are so many cultivars, this one is a lace cap type with double flower type on the periphery. For the cultivar name or the exact terms on sub-typing them I have no clear idea.
Texas (Zone 8a)
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GrammaChar
Oct 21, 2017 12:02 AM CST
Thank you!
GrammaChar
Hurst, TX (Zone 8a)
Dog Lover Region: Texas
luis_pr
Oct 22, 2017 11:24 AM CST
Could be a lacecap (aka, hydrangea macrophylla normalis) or a serrata (aka, hydrangea serrata, mountain hydrangea, even "mini-lacecaps" because the serrata shrubs tend to be smaller than lacecaps) although, if planted here in Central or North-central Texas, it would bloom a shade of pink... blue if planted over by Tyler and some of the eastern parts of the state.

Some forms tend to have colored sepals -as shown below- while others have white sepals. The center structures around which the sepals form are the "real" flowers and they may turn pink-ish, blue-ish or purple-ish depending on the soil acidity and amount of aluminum in the soil.

Serratas tend to be smaller shrubs that leaf out later (so they would do great in cold zones like Z6 for example, where late frosts can zap the leaves and flower buds). Serratas sometimes have sepals that turn upside down at the end of the growing season to show the bottom part of the sepals. They may also have better foliage in the Fall and some even develop a regular mophead bloom look as the bloom gets older.

Here is a lacecap called Blue Wave:
https://i.pinimg.com/736x/49/a...

Here is another lacecap called Star Gazer:
http://www.centertonnursery.co...

This lighter bluish one is a serrata called Blue Deckle:
https://static.ashwoodnurserie...

Most serratas originate from Japan/Korea, etc so it is not surprising to find them in SE Alaska too. Lacecaps also originate from Japan but there are many hybrids developed in Europe and the US. I grow Blue Deckle here from a sample that a friend in Washington State sent me.

Were you taking a cruise? A friend of mine just returned from an Alaska Cruise... the southeast side and said she had a good time.
[Last edited by luis_pr - Oct 23, 2017 9:02 AM (+)]
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Texas (Zone 8a)
Passionate about Native Plants
Region: Texas Butterflies Salvias Garden Photography Native Plants and Wildflowers Bee Lover
Birds Hummingbirder Million Pollinator Garden Challenge
Image
GrammaChar
Oct 23, 2017 11:55 AM CST
Thank you for the links. Star Gazer looks the closest to my photo. Lovely plants, but I'm not sure they'd do well in my summer heat and caliche soil. Yes, my daughter and I went on a cruise and it was wonderful. We saw glaciers, bald eagles, salmon and so much more. But my favorite times were when we hiked the trails.
Thanks again for your help.
GrammaChar
Hurst, TX (Zone 8a)
Dog Lover Region: Texas
luis_pr
Oct 23, 2017 6:31 PM CST
With caliche soil, I would suggest to grow the plant in a pot. Too much trouble otherwise. We have some areas near me in Fort Worth that also have caliche and there is a soil layer above it that is probably slightly less than 1' before the caliche layer is visible, so I know what a pain that is.

https://extension.arizona.edu/...

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