Here's the list of Swallowtail Host Plants, from the Butterfly Forum: SWALLOWTAILS Giant Swallowtail - Citrus family, Rutaceae 1. Ptelea trifoliata - hop tree, wafer ash 2. Zanthoxylum clava-herculis - hercules club 3. Zanthoxylum fagara - wild lime 4. Zanthoxylum americanum - prickly ash 5. Citrus spp. - various species, including cultivated 6. Murraya paniculata - orange jasmine 7. Ruta graveolens - rue Spicebush Swallowtail - Laurel family, lauraceae 1. Persea borbonia - redbay 2. Persea palustris - swampbay 3. Sassafras albidum - sassafras 4. Lindera benzoin - spicebush 5. Cinnamomum camphora - camphor tree Pipevine swallowtail caterpillars will die if raised on tropical pipevines. Please only use the pipevines on the list. Pipevine Swallowtail - Pipevine family, Aristolochia 1. Aristolochia macrophylla - big leaf pipevine 2. Aristolochia tomentosa - woolly pipevine 3. Aristolochia serpentaria - Virginia snakeroot 4. Aristolochia californica - California pipevine 5. Aristolochia fimbriata - white-veined Duchman's pipe 6. Aristolochia trilobata - Dutchman's Pipe 7. Aristolochia clematitis - Birthwort Anise Swallowtail - Carrot family, Apiaceae 1. Pimpinella anisum - anise 2. Foeniculum vulgare - fennel 3. Lomatium  parsnip Eastern Black Swallowtail - Rue family, Rutaceae - Carrot family, Apiaceae 1. Ruta graveolens - rue 2. Anethum graveolens - dill 3. Foeniculum vulgare - fennel 4. Petroselinum crispum  parsley 5. Zizia aurea - golden Alexander Palamedes Swallowtail - Laurel family, lauraceae 1. Persea borbonia - redbay 2. Persea palustris - swampbay 3. Sassafras albidum  sassafras Zebra Swallowtail - Pawpaw family, annonaceae 1. Asimina triloba - common pawpaw 2. Asimina pygmaea - dwarf pawpaw 3. Annona muricata  soursop Polydamas Swallowtail - Pipevine family, Aristolochia 1. Aristolochia elegans - calico flower 2. Aristolochia gigantea - giant pipevine Eastern Tiger Swallowtail - Rose family, Rosaceae - Magnolia family, Magnoliaceae - Olive family, Oleaceae 1. Prunus serotina - wild black cherry 2. Liriodendron tulipifera - tulip poplar 3. Ptelea trifoliata - wafer ash, hoptree 4. Fraxinus velutina - Arizona ash tree Canadian Swallowtail 1. Populus tremuloides - quaking aspen Two-tailed Tiger Swallowtail - Cherry family, Prunus - Ash family, Fraxinus - Citrus family, Ptelea 1. Prunus virginiana - chokecherry 2. Ptelea crenulata - California hoptree 3. Ptelea trifoliata - Common hoptree Pale Swallowtail - Buckthorn family, Rhamnaceae 1. Rhamnus californicus - coffeeberry 2. Ceanothus arboreus - California lilac Western Tiger Swallowtail - Willow family, Salicaceae

Figured I'd piggyback on this thread. My son was outside yesterday picking up tree limbs that were brought down by a storm last week. He got very excited when he picked up one big 'ole dead ash tree limb because it had a butterfly chrysalis on it. I believe it is a tiger swallowtail. The hoop in the middle was no longer attached to the limb. I pulled the chrysalis off at the bottom and got some silk. Is it OK to hang a tiger chrysalis upside down? I've had BST and ZST chrysalises eclose just laying on tissue paper but since I've got some silk to work with, I'd rather hang this tiger unless swallowtails really object to being upside down. KC

Well, here's a few of my host plants: Common Hop Tree is used by both the Giant Swallowtail and the Two-tailed Tiger Swallowtail around here. My Escarpment Black Cherry trees are used by the Tiger Swallowtail, Two-tailed Tiger Swallowtail and the Red-spotted Purple. Right now the native Plateau Agalinis is up and looking good, but I haven't seen any Common Buckeye cats yet...although the butterflies have been around recently. Spicebush...well, that one is obvious, Spicebush Swallowtail. Velvetleaf Mallow (Allowissadula holosericea)...I've discovered that this native plant is a host to skippers, mainly the Texas Powdered Skipper. Common Sunflower or Zexmenia (Zexmenia hispida)...on occasion the Bordered Patch will use them...right now the cats are on the Sunflower. Mexican Milkweed and Texas Milkweed (Asclepias texana) for Monarchs and Queens. The only things that have eaten any milkweed so far this year are some beetles...really pesky things. Hopefully the Queens will lay eggs soon. I'll have to think about the rest. Kind of late right now.

Wish I had seen that link on Amazon. I bought the expensive way. $50 seemed cheap when the used ones were going for $106. My search included "scott" so I missed the cheap ones. Sometimes I catch the cheaper way and sometimes I don't. :( As for PC compatible, when are you going to learn how to run Windows software on your Apple? I knew people doing it back in the '90s and it is actually easier to do it these days. Crash different. :D