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Category: Pests & Disease

Ricinus communis

Q: Could you help me determine the name of the plant that just appeared in my garden one day in late summer?


June 13, 2017

Q: Could you help me determine the name of the plant that just appeared in my garden one day in late summer? It had interesting foliage so I let it grow. It may be an invasive weed but it turned out to have a very pretty and unusual flower. ... READ MORE

Category: Home Landscapes, Pests & Disease
Tags: Castor Oil Plant, Castorbean, Poisin, Ricinus Communis, Toxic
Blossom End Rot

Q: Last year I had the ends rot out of watermelon and cantaloupe. What can I put on the plants to prevent the end rot?


June 13, 2017

Q: Last year I had the ends rot out of watermelon and cantaloupe. They bloom but no fruit developed. This year, I planted zucchini instead and I am getting the same problem. The fruit is rotting out from the bloom end. I now have cantaloupe ... READ MORE

Category: Fruits & Vegetables, Home Landscapes, Pests & Disease
Tags: Blossom End Rot, Melon, Squash
melanose

Q: The peeling of my grapefruit on my citrus tree is brown and it feels like sand paper. They are ripe and mature but what is wrong with them?


June 12, 2017

A: The disease is probably melanose, which is a common coastal fungal disease that primarily occurs in grapefruit but can attack any citrus. The first symptoms on leaves are small, circular, dark depressions with a yellow margin, similar to ... READ MORE

Category: Fruits & Vegetables, Home Landscapes, Pests & Disease
Tags: Ctirus, Grapefruit, Melanose
Citrus Mites

Q: I have a citrus tree and the leaves are curling, dropping off, and they look pale. What is wrong with my tree?


June 12, 2017

A: I am glad you brought a clipping of the tree to me. After examining it closely, I could see the culprit was a citrus mite. The citrus red mite or purple mite, Panonychus citri (McGregor), was first recognized as a pest of Florida citrus in ... READ MORE

Category: Fruits & Vegetables, Home Landscapes, Pests & Disease
Tags: Citrus, Citrus Mite, Panonychus Citri
Whitefly fungi

Q: What is wrong with my citrus tree? I see little white flies whenever I get near the fruit or leaves. I turned some of the leaves over and saw these orange specks. Is this an insect or a disease?


June 12, 2017

A: Actually the orange spots you see are neither an insect nor a disease. The spots are beneficial fungi which attack the young stationary stage (pupae) of a common citrus pest called the white fly. The white fly is an important pest of many ... READ MORE

Category: Fruits & Vegetables, Home Landscapes, Pests & Disease
Tags: Aegerita Webberi, Aschersonia Aleyrodis, Aschersonia Goldiana, Citrus, Friendly Fungi, Whitefly

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