Ants. Nematodes. Oakroot Fungus. Bacterial Crown Gall. Earwigs. Flat-Headed Borers.
Ants. Canker. Oakroot Fungus. Bacterial Crown Gall.
Aphids. Spittlebugs. Leafhoppers. Scale Insects. Thrips. Flat-Headed Borers.
Marmara Cambium Miners.
Caterpillars. Stem Sawflies. Gall Wasps. Ants. Cane Borers. Spider Mites. Slugs and Snails.
Other Animal Pests.
Powdery Mildew. Blackspot. Downy Mildew. Botrytis Blight.
Anthracnose. Rose Spring Dwarf.
Aphids. Spittlebugs. Leafhoppers. Scale Insects. Thrips. Scarab Beetles. Fuller's Rose
Weevils. Marmara Cambium Miners.
Caterpillars. Rose Slugs/Rose Sawflies.
Gall Wasps. Ants. Leafcutter Bees.
Spider Mites. Slugs and Snails.
Other Animal Pests.
Powdery Mildew. Blackspot. Rust. Downy Mildew. Botrytis Blight.
Canker. Anthracnose. Rose Mosaic. Rose Rosette. Rose Spring Dwarf.
Aphids. Spittlebugs. Leafhoppers. Thrips. Katydids. Flea Beetles. Rose Curculios (Weevils).
Caterpillars. Stem Sawflies. Ants. Spider Mites. Slugs and Snails.
Other Animal Pests.
Powdery Mildew. Botrytis Blight.
Rose Spring Dwarf.
Aphids. Thrips. Earwigs. Scarab Beetles. Diabrotica Beetles.
Rose Curculios (Weevils).
Caterpillars. Ants. Botrytis Blight.
11aphid-adult.jpg:
Winged Aphid. 11aphid5.jpg:
Early aphid infestation on new spring growth (Photo by Bob Alde). 11aphid2.jpg:
Aphid infestation on a bud. 11aphid3.jpg:
Heavy aphid infestation on rose tip. 11aphid4.jpg:
Aphid infestation showing cast skins and honeydew. 11aphidmummy.jpg:
Aphid mummy (Photo by Bob Alde). 11sootymold.jpg:
Sooty mold on leaves growing on aphid honeydew. 11leafhopper.jpg:
Rose Leafhopper with cast skin (Photo courtesy of Ray Gill, CDFA). 11leafhopper-dam.jpg:
Rose Leafhopper leaf damage. 11spittlebug-froth.jpg:
Spittlebug froth on miniature roses. 11spittlebug-nymph.jpg:
Spittlebug nymph out of the froth. 11spittlebug-adult.jpg:
Spittlebug adult (Photo courtesy of Ray Gill, CDFA). 11rosescale.jpg:
Rose scale on raspberry cane (Photo courtesy of Ray Gill, CDFA). 11rosescale-naked.jpg:
Rose scale female uncovered and with eggs (Photo courtesy of Ray Gill, CDFA).
11sanjosescale.jpg:
San Jose scale (Photo courtesy of Ray Gill, CDFA). *Soft brown scale. *Cottony Cushion scale. 11iriswhitefly.jpg:
Iris whitefly common on roses in central California. 11bayberrywhitefly.jpg:
Bayberry whitefly on citrus from southern California. 11spiralingwhitefly.jpg:
Spiraling whitefly on rose foliage in Hawaii. Note emerged pupal cases and waxy
residue. 11spiralingwhitefly1.jpg:
Spiraling whitefly on rose foliage in Hawaii. Note spiraling arrangement of eggs.
11spiralingwhitefly2.jpg:
Spiraling whitefly on rose foliage in Hawaii. Note spiraling arrangement of eggs
as well as the waxy residue. 12earwig.jpg:
Adult male European earwing. 12earwig-inrose.jpg:
Adult female European earwing hiding in flower petals. 12katydid-adult.jpg:
Katydid adult on citrus foliage. 12katydid-nymph1.jpg:
Katydid nymph showing color form. 12katydid-nymph2
Katydid nymph another color form. 13westernflowerthrips.jpg:
Western flower thrips adults and immatures. 13redbandedthrips-dam.jpg:
Red-banded thrips damage to rose foliage in Hawaii. Note the silvering coloration
on the upperside of the leaflets due to the thrips' feeding. 13redbandedthrips-dam2.jpg:
Red-banded thrips damage to rose foliage in Hawaii. Note the silvering coloration
hue on the upperside of the leaflet due to the thrips' feeding. Also note the
shiny excretions unique to thrips --They feed and defecate on their feeding substrate.
13redbandedthrips-dam4.jpg:
Red-banded thrips damage to rose foliage in Hawaii. Leaf #4 with diagnostic damage.
13redbandedthrips-dam5.jpg:
Red-banded thrips damage to rose foliage in Hawaii. Leaf #5 with diagnostic damage.
14rosemidge-dam.jpg:
Damage caused by rose midge larvae to flowering tips and buds of roses. 14cecidomyiid-adults.jpg:
Relative size and shape of male and female midges. NOTE: These are not the adults
of rose midge, but a related species. 15diabroticabeetle.jpg:
Western spotted cucumber beetle from Napa, CA. 15diabroticabeetle2.jpg:
Western spotted cucumber beetle from Napa, CA. Graphic way of disposing of them.
15diabroticabeetle3.jpg:
Western spotted cucumber beetle from Redding, CA. Beetle among a beautiful bloom
of Europeana. 15japanesebeetle.jpg:
Japanese beetle from New York. 15japanesebeetle-dam.jpg:
Japanese beetle skeletonizing leaf. 15chineserosebeetle.jpg:
Chinese rose beetles from Hawaii. 15chineserosebeetle2.jpg:
Chinese rose beetles from Hawaii. Note the lack of irridescent coloration on the
body. 15chineserosebeetle-dam.jpg:
Chinese rose beetle damage to the foliage roses grown in a garden in Hawaii. 15chineserosebeetle-dam2.jpg:
Chinese rose beetle damage to foliage in a garden in Hawaii. 15chineserosebeetle-dam3.jpg:
Chinese rose beetle damage to foliage in a garden in Hawaii. 15hopliabeetle.jpg:
Hoplia beetle showing some petal damage (central California). 15hopliabeetle2.jpg:
Hoplia beetles from central California. Note coppery irridescent color on the
underside of the body and the brown wingcovers (elytra). These scarab beetles
feed on the petals of light color flowers during late April and throughout the
month of May. *Serica scarab beetle from southern California
(no picture). 15flatheadedborer.jpg:
Pacific flatheaded borer larva (Photo by Steve Jones). 15flatheadedborer2.jpg:
Another picture of Pacific flatheaded borer larvae in the actual damaged cane
(Photo by Steve Jones). *Fuller's rose weevil from central California.
15fullersroseweevil-dam.jpg:
Fuller's rose weevil damage to edges of leaves from central California. 15roseweevil-adult.jpg:
Rose curculio (weevil) from central California. 15roseweevil-adult-rg.jpg:
Another picture of a rose curculio (weevil) from central California. 15roseweevil-adults.jpg:
Another picture of a rose curculios (weevils) damaging rose tips and developing
buds from central California. 15roseweevil-buddam.jpg:
Rose weevil damage to growing tips from central California. 15roseweevil-petaldam.jpg:
Rose weevil damage to the petals of an opening rose. 15roseweevil-petaldam2.jpg:
Another pictures of rose weevil damage to the petals of opening flowers. 15roseweevil-squished.jpg:
Picture of my favorite, non-toxic way of controlling this pest in my rose garden. 16tobaccobudworm.jpg:
Green budworm camouflaged among geranium stems & foliage. 16tobaccobudworm2.jpg:
Brown budworm feeding on geranium leaf. 16tobaccobudworm3.jpg:
Green budworm feeding on rose petals. 16leaftier.jpg:
A leaf-rolling caterpillar from unrolled leaflet. 16leaftier-dam.jpg:
A leaf-rolling caterpillar damage to rose leaves. 16leafroller-dam.jpg:
Fruit-tree leafroller damage and feeding nest. 16leafroller-larva.jpg:
Fruit-tree leafroller larva. 16leafroller-adult.jpg:
Fruit-tree leafroller adult moth. 16leafroller-.jpg:
Fruit-tree leafroller caterpillar. Graphic way of disposing of them. 16cambiumminer-leaf.jpg:
Marmara leaf cambium miner inside serpentine mines. 16cambiumminer-stem.jpg:
Marmara stem cambium miner inside serpentine mines (Photo by Steve Jones, Santa
Clarita, CA). 17roseslug-bristly-bo.jpg:
Bristly rose slug (Photo by Brad Oliver, Salinas, CA). 17roseslug-bristly-dam-bo.jpg:
Bristly rose slug damage (Photo by Brad Oliver, Salinas, CA). 17roseslug-bristly-dam.jpg:
Characteristic damage by bristly rose slugs to the underside of the leaves. 17roseslug-bristly-dam2-.jpg:
Another damaged leaf with characteristic damage by bristly rose slugs. 17roseslug-euro-larva.jpg:
European rose slug from central California. 17roseslug-euro-larva2.jpg:
Another picture of European rose slug from central California. 17roseslug-euro-dam1.jpg:
European roseslug skeletonizer damage from central California. 17roseslug-coiled1.jpg:
Curled (Coiled) rose sawfly damage from central California (Lake County, CA).
17roseslug-coiled2.jpg:
Picture #2 of the Curled (Coiled) rose sawfly damage from central California (Lake
County, CA). 17roseslug-coiled3.jpg:
Picture #3 of the curled (Coiled) rose sawfly damage from central California (Lake
County, CA). 1cephid.jpg:
Raspberry stem sawfly. 1cephid-dam2.jpg:
Raspberry stem sawfly damage. Note girdling damage to stem. 1cephid-dam3.jpg:
Raspberry stem sawfly damage. 17cynipid-leafgalls.jpg:
Cynipid wasp leaf galls. 17cynipid-stemgalls.jpg:
Cynipid wasp stem galls. 17ant.jpg:
Ant feeding on aphid honeydew on a rose leaf. 17caneborer-dam.jpg:
"Cane borer" damage to rose stem. 17caneborer-bee.jpg:
Small carpenter bee boring into cane. 17caneborer-seal.jpg:
Rosa Villegas applying a sealant to stems of Jean Kenneally. 17osmialeafcutterbee.jpg:
A leafcutter bee cutting the edges of a leaf (Picture courtesy of Larry Allen).
17alfalfaleafcutterbee2.jpg:
Alfalfa leafcutter bee on nesting domicile from northern California. 17leafcutterbee-dam.jpg:
Alfalfa leafcutter bee damage from central California. 18twospottedspidermite.jpg:
Spider mites, adults, immatures, and eggs. 18twospottedspidermite-up1.jpg:
Spider mite damage to upper side of leaf #1. 18twospottedspidermite-up2.jpg:
Spider mite damage to upper side of leaf #2. 18twospottedspidermite-un1.jpg:
Spider mite damage to under side of leaf #1. 18twospottedspidermite-un2.jpg:
Spider mite damage to under side of leaf #2. 18carminespidermite-dam.jpg:
Carmine spider mite damage to rose foliage in Hawaii. Note the reddish coloration
of the spider mites and the webbing on the underside of the leaf. 19snail.jpg:
Snail with egg mass. 19snail2.jpg:
Snails with feeding damage. *Snail/Slug slime on foliage (need picture).
19slug.jpg:
Slug slowly moving. 19slug-hawaii.jpg:
A flat slug found unded a potted rose in Hilo, Hawaii. 21powderymildew.jpg:
Powdery mildew on peduncle of bloom & leaves. 21powderymildew2.jpg:
Powdery mildew on bud & leaf, notice distortion. 21powderymildew-stem-ow.jpg:
Powdery mildew mycelia overwintering on pruned rose stem. 21powderymildew-inf.jpg:
Severe infestation of powdery mildew. 21blackspot-inf.jpg:
Severe infestation of blackspot fungus on foliage. Note the yellowing of leaflets
and fringed outer margins of the black spots. 21blackspot.jpg:
Blackspot fungus on leaf, note yellowing of leaflets and fringed margins of black
spots. 21blackspot2.jpg:
Another leaf infested with blackspot fungus. 21blackspot-leaf1.jpg:
Another example of bllackspot fungus on rose foliage. 21blackspot-leaf2.jpg:
Another example of bllackspot fungus on rose foliage. 21blackspot-leaf3.jpg:
Another example of bllackspot fungus on rose foliage. 21rust-un.jpg:
Rust fungus spore postules on undersides of leaf. 21rust-up.jpg:
Rust symptoms on uppersides of leaf. 21downymildew-up1.jpg:
Downy Mildew spotting on upper side of leaf. Note purple spots, angular and along
veins, and chemical-like necrotic spots. 21downymildew-up2.jpg:
Downy Mildew spotting on upper side of leaf, on a 2nd leaf. 21downymildew-up3.jpg:
Downy Mildew spotting on upper side of leaf, on a 3rd leaf. 21downymildew-un1.jpg:
Downy Mildew on underside of leaf #1. 21downymildew-un2.jpg:
Downy Mildew on underside of leaf #2. 21downymildew-un3.jpg:
Downy Mildew on underside of leaf #3. 21botrytis-spots1.jpg:
Spotting caused by the Botrytis spores to a rose bloom. Notice "water spots" surrounded
by pink ring. 21botrytis-spots2.jpg:
Close-up of "water spots" caused by spores of Botrytis blight on the petals. 21botrytis-spots3.jpg:
More spotting of the petals of Minnie Pearl caused by Botrytis blight. 21botrytis-bloomrot1.jpg:
Botrytis blight on rose bloom, notice brown petals. 21botrytis-bloomrot2.jpg:
Botrytis blight on rotten bloom showing grey fruiting bodies. 21botrytis-bloomrot3.jpg:
Botrytis blight on rotten bloom. 21canker.jpg:
Rose canker on stems of potted plant. 21canker2.jpg:
Rose canker on stem 21canker3.jpg:
Rose canker on stem 21canker4.jpg:
Rose canker on stem 21canker5.jpg:
Rose canker on stem 21anthracnose.jpg:
Spot anthracnose on rose leaf. 21anthracnose2.jpg:
Spot anthracnose on rose leaf. 21anthracnose3.jpg:
Spot anthracnose on rose leaf. 21anthracnose4.jpg:
Spot anthracnose on rose leaf. 21anthracnose5.jpg:
Spot anthracnose on rose leaf. 21anthracnose6.jpg:
Spot anthracnose on rose leaf. 22bacterialcrowngall.jpg:
Bacterial crown gall on crown of rose bush. 22bacterialcrowngall2.jpg:
Bacterial crown gall on stem of rose bush. 22bacterialcrowngall.jpg:
larger bacterial crown gall on stem of rose bush. 23mosaicvirus1.jpg:
Leaf #1 exhibiting rose mosaic virus. 23mosaicvirus2.jpg:
Leaf #2 exhibiting rose mosaic virus. 23mosaicvirus3.jpg:
Leaf #3 exhibiting rose mosaic virus. 23mosaicvirus4.jpg:
Leaf #4 exhibiting rose mosaic virus. 23mosaicvirus5.jpg:
Leaf #3 exhibiting rose mosaic virus. 23mosaicvirus6.jpg:
Leaf #4 exhibiting rose mosaic virus. 23rosette1.jpg:
Wild rose collected in northeastern California with rose rosette disease symptoms.
The wild rose appears to be Rosa woodsii. 23rosette2.jpg:
Same as above, different sample 23rosette3.jpg:
Another sample of rose rosette but in a modern rose. 23springdwarf.jpg:
Rose spring dwarf disease symptoms on new foliage. 23springdwarf2.jpg:
Rose spring dwarf disease symptoms on new foliage. 23springdwarf3.jpg:
Rose spring dwarf disease on affected plant compared to healthy one. 
If you have any questions or constructive comments, I would love to hear from you, please send e-mail to Baldo Villegas