UC Master Gardeners, Santa Clara County, CA
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UC Master Gardeners, Santa Clara County, CA

Posts Tagged: trees

Invasive Spotlight: Shot Hole Borers and the Diseases They Carry

Discolored patches on bark from polyphagous shot hole borer adults boring into a tree trunk. (Credit: Akif Eskalen Lab, UC Riverside)

Shot hole borers are tiny insects the size of a sesame seed that don't look particularly harmful,...

Poster
Poster

Posted on Thursday, June 7, 2018 at 10:00 PM
Focus Area Tags: Pest Management Yard & Garden

Asian Citrus Psyllid Found in San Luis Obispo County

Lemons on a tree. (Credit: Pixabay.com)

San Luis Obispo County has seen more than 20 detections of Asian citrus psyllid (ACP) since...

Lemons on a tree. (Credit: Pixabay.com)
Lemons on a tree. (Credit: Pixabay.com)

Lemons on a tree. (Credit: Pixabay.com)

Actual size of Asian citrus psyllid. (Credit: B. Grafton-Cardwell)
Actual size of Asian citrus psyllid. (Credit: B. Grafton-Cardwell)

Actual size of Asian citrus psyllid. (Credit: B. Grafton-Cardwell)

Posted on Friday, May 11, 2018 at 10:40 PM
Tags: ACP (27), Asian citrus psyllid (28), disease (30), HLB (23), huanglongbing (33), incurable (1), Nipomo (1), San Luis Obispo (2), trees (10), UC IPM (189)
Focus Area Tags: Pest Management Yard & Garden

Landscape Tree Damage: It's Not Always a Pest Issue

Fig 1. Limb dieback and sparse canopy of overwatered olive trees around which turf was planted. Unirrigated trees in the background are healthy. (Photo: L. R. Costello, UCCE)

[From the Spring issue of the UC IPM Retail Nursery & Garden Center News] Most disorders...

Posted on Wednesday, March 14, 2018 at 11:00 PM
Tags: abiotic (4), damage (12), diseases (8), disorders (1), drought (8), Green Bulletin (3), Hartin (1), heat stress (1), landscape (25), mechanical injury (1), trees (10), UC IPM (189)
Focus Area Tags: Pest Management Yard & Garden

Pruning Trees in Winter

Pruning a tree. (Photo: Pixabay)

Winter is an ideal time to prune deciduous fruit and shade trees, since the trees are dormant and...

Posted on Wednesday, January 3, 2018 at 4:41 PM
Tags: apricot (4), cherry (6), disease (30), dormant (1), environmental disorders (2), fruit (5), pest (73), prune (4), pruning (4), tree (16), trees (10), UC IPM (189), winter (6)
Focus Area Tags: Pest Management Yard & Garden

Mistletoe

Mature broadleaf mistletoe plant. (Photo: Jack Kelly Clark)

Mistletoe hung in doorways is a traditional holiday decoration, but when it's growing on trees in...

Dwarf mistletoe stems and seeds on a pine branch. (Photo: Jack Kelly Clark)
Dwarf mistletoe stems and seeds on a pine branch. (Photo: Jack Kelly Clark)

Dwarf mistletoe stems and seeds on a pine branch. (Photo: Jack Kelly Clark)

Posted on Thursday, December 21, 2017 at 2:57 PM
Tags: broadleaf (1), dwarf (1), holiday (1), mistletoe (2), parasitic plant (2), trees (10), UC IPM (189)

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