Success With Hydrangeas Blog

On my recent garden visits, I’ve noted an abundance of unsightly foliage and hydrangea leaf spots. They can be bacterial leaf spot from an infection by Xanthomonas campestris, or Cercospora which grows from the pathogen Cercospora hydrangeae. I’m also seeing powdery mildew on many plants. You can thank Erysiphe friesii var. friesii (formerly Microsphaera friesii).…

In July, I wrote about web worms (Hyphantria cunea) on panicle hydrangeas. For the past several weeks, the second generation of web worms has been active in my neck of the woods. And boy, are they active! It seems every day they form new webs where none were the previous day. That will continue through October or until the…

I have been roaming around these past few weeks, visiting open gardens throughout my local area. The panicle hydrangeas have been just glorious in every garden I have seen with their undeniably spectacular flowers and form. Not to mention the impressive flowers of oak leaf hydrangeas are showing their magnificent colors as well. PANICLE HYDRANGEAS:…

Hard to believe we are past mid-July – already! NOW is the time to deal with the last bit of mid-season hydrangea care for July, ideally by August 1. JULY HYDRANGEA CARE: PINCH PRUNE Hydrangea care in July involves “pinch pruning” any of your hydrangeas that flower on old wood. What’s the science behind this?…

If your garden is anything like mine, right about now insects and disease start rearing their ugly heads  signaling time for hydrangea care. In most cases, they show up as a result of cultural conditions. We had a very wet and cool spring and things have finally begun to dry out. But all that rain…

Time to report on 2019 winter impact on hydrangeas. In early May, I went out to my Zone 5 garden to see what the past winter had done to my hydrangeas that bloom on old wood: big leaf (macrophylla) and mountain hydrangea (serrata). I also checked on the oak leaf (quercifolia) and climbing (petiolaris) hydrangeas I grow. 

  If you’re lucky enough to have a climbing hydrangea (hydrangea anomala petiolaris), you already know what a fabulous plant it is. And right now it is in its glory in my zone 5B garden. The fact that it grows in shade and is drought tolerant makes it doubly attractive. And in my little slice…

Are your ‘Annabelle’ hydrangea leaves closed? To start with, inspect them and any other woodland/smooth (arborescens) hydrangeas you may have, e.g., Incrediball® or Invincibelle® Spirit. You may notice the same situation like my leaves in the photo. Interesting, huh? Don’t panic!

Pruning your old wood hydrangeas may be possible now. But not all of them which is a source of much confusion.Which ones should you examine for this task? Your old wood plants include big leaf hydrangeas (macrophylla), mountain hydrangeas (serrata), oak leaf hydrangeas (quercifolia),  and climbing hydrangeas (petiolaris). Even if your plant is a rebloomer…

Hydrangea pruning of  ‘Annabelle’ and ‘Limelight’ is the order of the day in my April Connecticut garden. They both flower on the growth they will put on this year, better known as “new wood.” In hydrangea-land, those new wood plants are woodland/smooth hydrangea arborescens like ‘Annabelle’, or for example any plant that has Incrediball® or…