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Fresno Gardening Green

News and information about sustainable gardening in Fresno County written by UC Master Gardener volunteers. For more information, visit the UC Master Gardeners of Fresno County website.

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Redbud
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Redhumped caterpillars can defoliate a redbud tree

March 26th, 2025
 By Beth Teviotdale Why are there no leaves on some shoots on my redbud tree? This sad sight is not uncommon come late spring and into summer. The villain responsible for this defoliation most likely is the redhumped caterpillar, which gets its name from the reddish hump located on its back a…
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Magnolia
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This week in the garden: March 28 - April 3

March 26th, 2025
Prepared by Terry Lewis Late March or early April is the end of the spring planting season; roots need to become established before the summer heat.TasksWatch for powdery mildew on susceptible plants. Rotate the fungicide used since the fungus may develop resistance.If citrus has scale, mites or thrips,…
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Monet painting
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This week in the garden: March 21 - 27

March 20th, 2025
 Prepared by Terry LewisAs spring unfolds, take time to enjoy the fruits of your labor. “My garden is my most beautiful masterpiece” ~ Claude MonetTasksCompost weed-free grass clippings and other thorn and disease-free garden waste.Better yet, start a grasscycling program for an existing lawn…
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Flower
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Keep potted plants beautiful and healthy by repotting every year

March 14th, 2025
By Elinor Teague The best time to repot container plants is in early spring, just as new growth begins. Instructions on repotting are basically the same for houseplants and for outdoor potted plants.Because the soil in container pot subsides or settles over time, many people mistakenly add more soil on…
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Blue-purple salvia
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March plant of the month: Rosette- and clump-forming salvias

March 13th, 2025
By Susan Rosenthal Having covered the first two major salvia groups, the small leaf (woody stemmed) and deciduous perennial salvias, this month's plants of the month are in the third and final group - the rosette- and clump-forming salvias.Rosette-forming species include S. argenta, S lyrata, S…
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