Skip to content
OpenPhenologybeta

Apocynaceae

Family · 18 species with a result in Ohio

Amsonia 1

eastern bluestar (Amsonia tabernaemontana)eastern bluestarAmsonia tabernaemontanaPhoto © amy_b · CC BY-NC-SA 4.0Early May to mid-June, middle week May 17–23

Apocynum 2

hemp dogbane (Apocynum cannabinum)hemp dogbaneApocynum cannabinumPhoto © kqedquest · CC BY-NC 4.0Late April to late September, middle week Jul 5–11spreading dogbane (Apocynum androsaemifolium)spreading dogbaneApocynum androsaemifoliumPhoto © Thayne Tuason · CC BY-NC 4.0

Asclepias 11

four-leaved milkweed (Asclepias quadrifolia)four-leaved milkweedAsclepias quadrifoliaPhoto © Matt Tomlinson · CC BY-NC 4.0Early May to early June, middle week May 24–30purple milkweed (Asclepias purpurascens)purple milkweedAsclepias purpurascensPhoto © dogtooth77 · CC BY-NC-SA 4.0Late May to mid-July, middle week Jun 21–27butterfly milkweed (Asclepias tuberosa)butterfly milkweedAsclepias tuberosaPhoto © Michael J. Papay · CC BY 4.0Early June to mid-September, middle week Jul 5–11prairie milkweed (Asclepias sullivantii)prairie milkweedAsclepias sullivantiiPhoto © Travis Bonovsky · CC BY-NC 4.0Mid-June to late August, middle week Jul 5–11common milkweed (Asclepias syriaca)common milkweedAsclepias syriacaPhoto © Randy Nonenmacher · CC BY-SA 4.0Late May to early November, middle week Jul 26 – Aug 1swamp milkweed (Asclepias incarnata)swamp milkweedAsclepias incarnataPhoto © aarongunnar · CC BY 4.0Mid-June to mid-September, middle week Jul 26 – Aug 1tall green milkweed (Asclepias hirtella)tall green milkweedAsclepias hirtellaPhoto © aarongunnar · CC BY 4.0Late June to late August, middle week Jul 26 – Aug 1whorled milkweed (Asclepias verticillata)whorled milkweedAsclepias verticillataPhoto © jaege202 · CC BY-NC 4.0Early July to early October, middle week Aug 2–8green antelopehorns (Asclepias viridis)green antelopehornsAsclepias viridisPhoto © sonnia hill · CC BY 4.0green comet milkweed (Asclepias viridiflora)green comet milkweedAsclepias viridifloraPhoto © davecz2 · CC BY-SA 4.0poke milkweed (Asclepias exaltata)poke milkweedAsclepias exaltataPhoto © Michael J. Papay · CC BY 4.0

Cynanchum 1

honey-vine climbing milkweed (Cynanchum laeve)honey-vine climbing milkweedCynanchum laevePhoto © howardecoworks · CC BY-NC 4.0Early June to mid-October, middle week Aug 9–15

Vinca 2

lesser periwinkle (Vinca minor)lesser periwinkleVinca minorPhoto © Miroslav Marić · CC BY-NC 4.0Early March to mid-October, middle week Apr 19–25greater periwinkle (Vinca major)greater periwinkleVinca majorPhoto © Σάββας Ζαφειρίου (Savvas Zafeiriou) · CC BY-NC 4.0Late March to mid-October, middle week May 10–16

Vincetoxicum 1

black swallow-wort (Vincetoxicum nigrum)black swallow-wortVincetoxicum nigrumPhoto © jacinta lluch valero · CC BY-SA 4.0

Missing records do not mean a species is absent.