![Garden webworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p18-garden-webworm.jpg?itok=eN_fDE_O)
![Garden webworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p18-garden-webworm.jpg?itok=eN_fDE_O)
Caterpillars in Your Yard and Garden, Page 18
Reviewed
Garden webworm caterpillars (Achyra rantalis) are present from late spring to fall. They produce two to three generations per year.
![Viceroy caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p50-viceroy.jpg?itok=A4jACRZO)
Caterpillars in Your Yard and Garden, Page 50
Reviewed
Viceroy caterpillars (Limenitis archippus) are present from early summer to fall. They produce two generations per year.
![Greenstriped mapleworm caterpillars.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p21-greenstriped-mapleworm.jpg?itok=Q739HX_6)
Caterpillars in Your Yard and Garden, Page 21
Reviewed
Greenstriped mapleworm caterpillars (Dryocampa rubicunda) are present from late spring to late fall. They produce one to two generations per year.
![Tussock moth caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p53-tussock-moth.jpg?itok=E8QdRxSq)
Caterpillars in Your Yard and Garden, Page 53
Reviewed
Whitemarked tussock moth caterpillars (Orgyia leucostigma) are present from May to October. They produce two generations per year.
![Zebra swallowtail caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p56-zebra-swallowtail.jpg?itok=3MgG11vV)
Caterpillars in Your Yard and Garden, Page 56
Reviewed
Zebra swallowtail caterpillars (Graphium marcellus) are present from May to November. They produce two to three generations per year.
![Hickory horned devil caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p24-hickory-horned-devil.jpg?itok=8fgE8cj_)
Caterpillars in Your Yard and Garden, Page 24
Reviewed
Hickory horned devil caterpillars (Citheronia regalis) are present from July to October. They produce two generations per year.
![Io moth caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p27-io-moth.jpg?itok=x35LlEfb)
Caterpillars in Your Yard and Garden, Page 27
Reviewed
Io moth caterpillars (Automeris io) are present from July to October. They produce two generations per year.
![Orangedog catterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p30-orangedog.jpg?itok=CfkPfF5t)
Caterpillars in Your Yard and Garden, Page 30
Reviewed
Orangedog caterpillars (Papilio cresphontes) are present from July to October. They produce two generations per year. They are considered a pest to citrus trees.
![Spider mite.](/sites/default/files/styles/large/public/2024-04/g07273cvr.jpg?itok=IQ-TPc_b)
Least-Toxic Control Methods to Manage Indoor Plant Pests
Reviewed
This publication discusses some of the least-toxic control options you can use for pests of houseplants, home greenhouses and interior plantscapes.
![Pickleworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p33-pickleworm.jpg?itok=fESfRmFp)
Caterpillars in Your Yard and Garden, Page 33
Reviewed
Pickleworm caterpillars (Diaphania nitidalis) are present from summer to fall. They produce two to three generations per year.
![Cover art for publication G7276](/sites/default/files/styles/large/public/images/g07276cvr.jpg?itok=40nmli1q)
Twig Girdler and Twig Pruner
Reviewed
Twig Girdler and Twig Pruner are long-horned beetle species that attack numerous types of valuable trees. Visit our website to learn more.
![Cover art for publication G6030](/sites/default/files/styles/large/public/images/g06030cvr-2.jpg?itok=UpP63tAk)
Home Fruit Production: Peach and Nectarine Culture
Revised
Peach and nectarine trees require considerable care, so cultivars must be carefully selected. Get tips for growing these fruits — including how many trees to plant, how to train and prune them, and how much to water them — in this guide.
![Bagworm caterpillar bag hanging from a branch.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p04-bagworm_0.jpg?itok=wewh1obl)
Caterpillars in Your Yard and Garden, Page 04
Reviewed
Bagworm caterpillars (Thyridopteryx ephemeraeformis) are present from early June to August. They produce one generation per year.
![Red-spotted purple caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p36-red-spotted-purple.jpg?itok=Bp7P6gzS)
Caterpillars in Your Yard and Garden, Page 36
Reviewed
Red-spotted purple caterpillars (Limenitis arthemis) are present from early summer to fall. They produce two generations per year.
![Cover art for publication G7360](/sites/default/files/styles/large/public/images/g07360cvr.jpg?itok=IeGtOEqH)
Boxelder Bug
Reviewed
![Cabbage looper caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p07-cabbage-looper.jpg?itok=LZVRCHXU)
Caterpillars in Your Yard and Garden, Page 07
Reviewed
Cabbage looper caterpillars (Trichoplusia ni) are present from late spring to fall. They produce two to three generations per year.
![Smalleyed sphinx caterpillars.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p39-smalleyed-sphinx.jpg?itok=ImqUPVoP)
Caterpillars in Your Yard and Garden, Page 39
Reviewed
Smalleyed sphinx caterpillars (Paonias myops) are present from May through September. They produce multiple generations per year.
![Clearwinged sphinx caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p10-clearwinged-sphinx.jpg?itok=WW3p-KuZ)
Caterpillars in Your Yard and Garden, Page 10
Reviewed
Clearwinged sphinx caterpillars (Hemaris diffinis) are present from April to September. They produce two generations per year.
![Stalk borer caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p42-stalk-borer.jpg?itok=5m_MUDLX)
Caterpillars in Your Yard and Garden, Page 42
Reviewed
Stalk borer caterpillars (Papaipema nebris) are present from May to August. They produce one generation per year.
![Eastern tent caterpillars.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p13-eastern-tent-caterpillar.jpg?itok=WeDCUAg_)
Caterpillars in Your Yard and Garden, Page 13
Reviewed
Eastern tent caterpillars (Malacosoma americanum) are present from early spring to June. They produce one generation per year.
![Tobacco hornworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p45-tobacco-hornworm.jpg?itok=AryyGYRw)
Caterpillars in Your Yard and Garden, Page 45
Reviewed
Tobacco hornworm caterpillars (Manduca sexta), left, and tomato hornworm caterpillars (Manduca quinquemaculata), below, are present from June through September. They produce two or more generations per year.
![European pine sawfly caterpillars.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p16-european-pine-sawfly.jpg?itok=eBwfgw4Z)
Caterpillars in Your Yard and Garden, Page 16
Reviewed
European pine sawfly caterpillars (Neodiprion sertifer) are present in spring and summer. They produce one generation per year.
![Variegated cutworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p48-variegated-cutworm.jpg?itok=xZqiEQOH)
Caterpillars in Your Yard and Garden, Page 48
Reviewed
Variegated cutworm caterpillars (Peridroma saucia) are present from late spring to early summer. They produce two to four generations per year.
![Gray furcula caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p19-gray-furcula.jpg?itok=B29z_J3V)
Caterpillars in Your Yard and Garden, Page 19
Reviewed
Gray furcula caterpillars (Furcula cinerea) are present from spring to fall. They produce two generations per year.
![Walnut caterpillars in red phase.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p51-walnut.jpg?itok=Ol_5vAat)
Caterpillars in Your Yard and Garden, Page 51
Reviewed
Red phase and black phase walnut caterpillars (Datana integerrima) are present from early May to September. They produce one to two generations per year.