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  2. Phytophthora nicotianae - Wikipedia

    en.wikipedia.org/wiki/Phytophthora_nicotianae

    [4] [6] On onion it causes the disease known as Phytophthora neck and bulb rot. Different stages of onion may be affected. Initially, tips of newly infected plants start to yellow and dry followed by softening of the "neck" of the plants that eventually fall over. Infected leaves may show grey lesions. Roots may become necrotic in late disease. [7]

  3. 7 Reasons Your Peace Lily Leaves Are Turning Yellow ... - AOL

    www.aol.com/lifestyle/7-reasons-peace-lily...

    While these plants are relatively low maintenance, it’s not unusual for peace lily leaves to turn yellow here and there due to stress, pests, or other issues. This guide explains the most common ...

  4. Leaf scorch - Wikipedia

    en.wikipedia.org/wiki/Leaf_scorch

    Leaf scorch (also called leaf burn, leaf wilt, and sun scorch) is a browning of plant tissues, including leaf margins and tips, and yellowing or darkening of veins which may lead to eventual wilting and abscission of the leaf. [1]

  5. Impatiens necrotic spot orthotospovirus - Wikipedia

    en.wikipedia.org/wiki/Impatiens_necrotic_spot...

    Symptoms of infection include a downward curling of the leaves, leaf tip dieback, stunting, necrosis of growing leaf tips, sunken 'chicken pox-like' spots on leaves (often with a surrounding halo), stem death and yellowing. [7] Since these symptoms are so generic, extreme caution must be taken when introducing new plants to your greenhouse.

  6. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    Plant material can also be the cause of leaf spot disease. These include infected seeds, transplants and discarded culls and leaves. [ 2 ] Tools used by humans and worker's hands during transplants, watering, and market practices can contribute to the dispersal of leaf spot pathogens.

  7. List of pests and diseases of roses - Wikipedia

    en.wikipedia.org/wiki/List_of_pests_and_diseases...

    Black spot (class Leotiomycetes: family Helotiales) Diplocarpon rosae syn. Marssonina rosae – Marssonina rosae causes black spots on leaves. [4] The spots, which may be as much as 12 mm across, are generally circular and have an irregular edge often with a yellow halo. Leaves frequently turn yellow and fall early.

  8. Why Does My Plant Have Brown Tips on the Leaves? - AOL

    www.aol.com/why-does-plant-brown-tips-201157051.html

    Tropical plants prefer higher humidity than we have in our homes. If your plant is sporting crispy, dark or brown tips on the leaves, it may mean you need to water more often. Check the soil ...

  9. Why Does My Plant Have Brown Tips on the Leaves? - AOL

    www.aol.com/why-does-plant-brown-tips-174804955.html

    The post Why Does My Plant Have Brown Tips on the Leaves? appeared first on Reader's Digest. Solve the problem with proper watering and fertilizing tips from a gardening expert.