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2. List of hydrangea diseases - Wikipedia

   en.wikipedia.org/wiki/List_of_hydrangea_diseases

   This article is a list of diseases of hydrangeas (Hydrangea macrophylla). Bacterial diseases ... Powdery mildew Erysiphe polygoni. Root rot Pythium spp. Rust

3. Erysiphe syringae - Wikipedia

   en.wikipedia.org/wiki/Erysiphe_syringae

   There are methods to treat powdery mildew using home-made preparations including fresh milk, which contains the active anti-pathogenic compound lecithin. [9] Lecithin is recognized by the European Union as a treatment for powdery mildews diseases and is commonly available in the soy-derived formulation ‘soy lecithin’. [10]

4. Why you should take steps if you see a grayish powder ... - AOL

   www.aol.com/news/why-steps-see-grayish-powder...

   Some plants are more susceptible, with hydrangeas, lilacs, phlox and peonies being the most common targets. ... Powdery mildew usually appears in spring or early summer. Although it thrives in ...

5. Hydrangea - Wikipedia

   en.wikipedia.org/wiki/Hydrangea

   Hydrangea flower color changes based on the pH in soil. As the graph depicts, soil with a pH of 5.5 or lower will produce blue flowers, a pH of 6.5 or higher will produce pink hydrangeas, and soil in between 5.5 and 6.5 will have purple hydrangeas. Hydrangea flower color can change based on the pH in soil.

6. How To Care For Hydrangeas In The Winter So You'll Have ... - AOL

   www.aol.com/care-hydrangeas-winter-youll...

   Hydrangeas are brimming with nostalgia, stirring memories of endless Southern summers. When winter arrives, these charming plants need a little TLC to ensure summer blooms return the following season.

7. It's peak hydrangea blooming season. Are your plants healthy?

   www.aol.com/peak-hydrangea-blooming-season...

   The Garden Geeks suggest 10 steps to take to revive a wilting or dying hydrangea, including checking your plant's soil moisture level; double-checking the amount of sun your hydrangea is getting ...

8. Sclerotinia sclerotiorum - Wikipedia

   en.wikipedia.org/wiki/Sclerotinia_sclerotiorum

   Sclerotinia sclerotiorum is a plant pathogenic fungus and can cause a disease called white mold if conditions are conducive. S. sclerotiorum can also be known as cottony rot, watery soft rot, stem rot, drop, crown rot and blossom blight.

9. Here's When You Should Cut Back Your Hydrangeas For Winter - AOL

   www.aol.com/heres-cut-back-hydrangeas-winter...

   All hydrangeas are perennials that come back with their luscious blooms year-after-year, but, within the larger hydrangea family, there are two types: old wood hydrangeas and new wood hydrangeas ...