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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 ... Pseudomonas solanacearum: Bacterial leaf spot Pseudomonas cichorii ...

  3. Hydrangea quercifolia - Wikipedia

    en.wikipedia.org/wiki/Hydrangea_quercifolia

    Compared to other Hydrangea species, oakleaf hydrangea is more susceptible to Fusarium root rot; however, disease severity varies among cultivars with 'John Wayne' and Snowflake =‘Brido’ being the most tolerant. [20] The primary foliar disease in oakleaf hydrangea is Xanthomonas leaf spot, which is a bacterial disease. [19]

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

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

    "Orange spots that form on the bottom or the underside of the leaves are hydrangea rust," read Epic Gardening's hydrangea guide. "The top of the leaf will turn yellow and the leaf will eventually die.

  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 Your Hydrangeas to Get the Biggest, Showiest ...

    www.aol.com/care-hydrangeas-biggest-showiest...

    Only some types of big leaf and mountain hydrangeas can change color in response to the presence of aluminum in the soil, not the soil pH. Forget about adding a penny, nails, coffee grounds, or ...

  7. No Front Yard Is Complete Without One of These Beautiful ...

    www.aol.com/growing-hydrangeas-5-main-types...

    Varieties of Oakleaf Hydrangea (Hydrangea quercifolia) The oakleaf hydrangea have to much to offer: big oak-shaped leaves, large conical-shaped blooms, peeling bark, and dramatic fall foliage that ...

  8. Verticillium wilt - Wikipedia

    en.wikipedia.org/wiki/Verticillium_wilt

    Wilt itself is the most common symptom, with wilting of the stem and leaves occurring due to the blockage of the xylem vascular tissues and therefore reduced water and nutrient flow. In small plants and seedlings, Verticillium can quickly kill the plant while in larger, more developed plants the severity can vary.

  9. 'Hydrangea hysteria': Last week's chill may have ... - AOL

    www.aol.com/hydrangea-hysteria-last-weeks-chill...

    A similar hydrangea danger situation occurred in March 2017, when a seemingly miffed C.L. Fornari prepared to cover hydrangea buds with a tarp at her Sandwich home in advance of a cold snap.