Big Leaf Hydrangea being wrapped for winter

I woke up to a very dark 44 degrees F this morning, a stark reminder that I need to get organized to do some hydrangea winter protection. Those that aren’t planted in protected locations as I described in an earlier blog post need a little help if I want to give them their best chance…

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Several hydrangeas of different colors

If your ground isn’t frozen yet (in the Northern hemisphere) or you haven’t wrapped your hydrangeas for winter (maybe you’re not doing that anyway), now is the best time to work on changing the color of your hydrangeas. Many big leaf (Hydrangea macrophylla) and mountain (H. serrata) flowers can be changed to either blue or…

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Big leaf hydrangea Let's Dance® Rhythmic Blue®

I am getting a lot of questions these days about hydrangea leaf spots and unsightly foliage. In most cases, the spots are from an infection by Xanthomonas campestris, or Cercospora which grows from the pathogen Cercospora hydrangeae. I’m also seeing powdery mildew on many other plants, like veggies and perennials that also blemish hydrangeas. You…

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Big Leaf Hydrangea In Its Autumn Colors

You have probably heard hydrangeas described as having a beautiful “antique” season of color, the late season. In most cases, the plants being discussed are big leaf (macrophylla) and mountain (serrata) hydrangeas. But don’t discount the oakleaf (quercifolia) and woodland/smooth (arborescens) hydrangeas. Their flowers also change into other colors. More about them later…

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Stop Old Wood Hydrangea Work

TAKE A BREAK FROM HYDRANGEA WORK If you are in the northern hemisphere and in zone 6 and colder, the beginning of August is the time to take a break from working on hydrangeas that flower on old wood. That translates into big leaf (macrophylla), mountain (serrata), oak leaf (quercifolia), and climbing (petiolaris) varieties.

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Hydrangea Serrata 'Tuff Stuff' looks great in a container

Our fabulous hydrangea season continues. But now it’s time to think about hydrangea pruning in mid-season, specifically big leaf and mountain hydrangeas. We have had so much good weather that the plants are putting on lots of new growth. That’s good news and bad news. Good news in that the new growth will fuel your…

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Blooming Bigleaf Hydrangea

Now that it is July, it’s time to fertilize your hydrangeas, especially for next year. You should be having a fabulous hydrangea year. The relatively mild winter and forgiving spring is giving all of us a fantastic show. Just about every big leaf hydrangea (macrophylla) is flowering. But don’t be lulled into thinking you can…

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Climbing hydrangea on arbor

I was horrified this past weekend to spot an extensive case of hydrangea scale on my climbing hydrangea (hydrangea ssp. petiolaris). It was an accidental discovery as my original mission was to prune it back. As covered in my book, Success with Hydrangeas, climbing hydrangeas flower on old wood so I knew it had to…

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Hydrangea flowers newly emerging

Now is the time to get ready for hydrangea bouquets. Between the mild winter and gradual spring warming, just about all of my big leaf hydrangeas are beginning to show their flowers. If you live in warmer parts of the country, yours are well ahead of this timing. So now I am looking forward to…

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