My Planting Calendar

Wyoming planting calendar

Using Wyoming’s average last spring frost of May 20 and first fall frost of September 15 — about 118 frost-free days. USDA zones 3a, 3b, 4a, 4b, 5a, 6a.

Wyoming covers a very wide range of climates. Treat this as a starting point and adjust to your local frost dates — the calendar generator lets you enter them.

CropStart indoorsTransplant / sow outFall sowingFirst harvest
CeleriacFeb 25 – Mar 11May 13 – May 30—Aug 28 – Sep 17
OnionMar 4 – Mar 18Apr 22 – May 9—Jul 28 – Aug 27
LeekMar 4 – Mar 18Apr 29 – May 16—Aug 14 – Oct 3
CeleryMar 4 – Mar 18May 13 – May 30—Aug 28 – Oct 7
RosemaryMar 4 – Mar 18May 20 – Jun 6—Aug 25 – Sep 24
EggplantMar 11 – Mar 25Jun 3 – Jun 20—Aug 14 – Sep 3
ParsleyMar 11 – Mar 25Apr 29 – May 16Jun 27 – Jul 14Jul 15 – Aug 4
ShallotMar 11 – Mar 25Apr 22 – May 9Sep 19 – Oct 6Jul 28 – Aug 27
Bell PepperMar 18 – Apr 1May 27 – Jun 13—Aug 2 – Sep 1
Chili PepperMar 18 – Apr 1May 27 – Jun 13—Aug 12 – Sep 11
Green Onion / ScallionMar 18 – Apr 1Apr 15 – May 2Jul 11 – Jul 28Jun 21 – Jul 11
ThymeMar 18 – Apr 1May 13 – May 30—Aug 3 – Aug 18
OreganoMar 18 – Apr 1May 13 – May 30—Aug 8 – Aug 18
MintMar 18 – Apr 1May 6 – May 23—Jul 22 – Aug 11
SageMar 18 – Apr 1May 13 – May 30—Aug 3 – Aug 18
TarragonMar 18 – Apr 1May 6 – May 23—Jul 12 – Aug 11
GingerMar 18 – Apr 1Jun 3 – Jun 20—Feb 5 – Apr 6
TurmericMar 18 – Apr 1Jun 3 – Jun 20—Feb 5 – Apr 6
TomatoMar 25 – Apr 8May 20 – Jun 6—Jul 26 – Aug 20
TomatilloMar 25 – Apr 8May 20 – Jun 6—Aug 10 – Sep 4
Ground CherryMar 25 – Apr 8May 20 – Jun 6—Aug 5 – Aug 25
Sweet MarjoramMar 25 – Apr 8May 20 – Jun 6—Jul 26 – Aug 15
Lemon BalmMar 25 – Apr 8May 6 – May 23—Jul 22 – Aug 11
Shiso (Perilla)Mar 25 – Apr 8May 20 – Jun 6—Aug 5 – Aug 25
KaleApr 1 – Apr 15Apr 22 – May 9Jun 20 – Jul 7Jun 18 – Jul 3
BroccoliApr 1 – Apr 15Apr 29 – May 16Jun 6 – Jun 23Jul 5 – Jul 30
CauliflowerApr 1 – Apr 15Apr 29 – May 16Jun 6 – Jun 23Jul 5 – Aug 4
CabbageApr 1 – Apr 15Apr 22 – May 9Jun 6 – Jun 23Jun 28 – Aug 7
Brussels SproutsApr 1 – Apr 15Apr 29 – May 16May 16 – Jun 2Aug 4 – Sep 3
OkraApr 8 – Apr 22May 27 – Jun 13—Jul 23 – Aug 7
BasilApr 8 – Apr 22May 27 – Jun 13—Jul 3 – Aug 2
Collard GreensApr 8 – Apr 22Apr 22 – May 9Jun 27 – Jul 14Jun 23 – Jul 13
KohlrabiApr 8 – Apr 22Apr 22 – May 9Jul 11 – Jul 28Jun 13 – Jun 28
Endive & EscaroleApr 8 – Apr 22Apr 29 – May 16Jun 27 – Jul 14Jul 30 – Aug 14
RadicchioApr 8 – Apr 22Apr 29 – May 16Jun 20 – Jul 7Jul 5 – Aug 14
ChayoteApr 8 – Apr 22May 27 – Jun 13—Oct 1 – Oct 31
Malabar SpinachApr 8 – Apr 22May 27 – Jun 13—Jul 28 – Aug 12
Summer SavoryApr 8 – Apr 22May 20 – Jun 6—Jul 21 – Aug 5
Pea—Apr 10 – Apr 29Jun 27 – Jul 14Jun 9 – Jun 24
Spinach—Apr 10 – Apr 29Jul 18 – Aug 4May 22 – May 30
Mache (Corn Salad)—Apr 10 – Apr 29Jul 11 – Jul 28May 30 – Jun 14
LettuceApr 15 – Apr 29Apr 29 – May 16Jul 11 – Jul 28Jun 5 – Jul 5
Swiss ChardApr 15 – Apr 29Apr 29 – May 16Jun 27 – Jul 14Jun 25 – Jul 5
Bok Choy / Pak ChoiApr 15 – Apr 29Apr 29 – May 16Jul 11 – Jul 28Jun 10 – Jun 25
Fennel (Bulb)Apr 15 – Apr 29May 6 – May 23Jun 13 – Jun 30Jul 17 – Aug 11
Napa CabbageApr 15 – Apr 29Apr 29 – May 16Jun 27 – Jul 14Jun 25 – Jul 20
Bitter MelonApr 15 – Apr 29May 27 – Jun 13—Jul 28 – Aug 17
CucamelonApr 15 – Apr 29May 27 – Jun 13—Aug 7 – Aug 17
New Zealand SpinachApr 15 – Apr 29May 20 – Jun 6—Jul 16 – Aug 5
PeanutApr 15 – Apr 29May 20 – Jun 6—Sep 4 – Oct 24
WatercressApr 15 – Apr 29Apr 29 – May 16Jul 25 – Aug 11Jun 25 – Jul 5
Luffa (Loofah Gourd)Apr 15 – Apr 29May 27 – Jun 13—Sep 1 – Oct 31
Beet—Apr 17 – May 6Jul 4 – Jul 21Jun 11 – Jul 1
Radish—Apr 17 – May 6Aug 1 – Aug 18May 14 – May 22
Arugula—Apr 17 – May 6Jul 25 – Aug 11May 22 – Jun 1
Fava Bean (Broad Bean)—Apr 17 – May 6Jul 11 – Jul 28Jul 6 – Jul 21
Tatsoi—Apr 17 – May 6Jul 18 – Aug 4May 27 – Jun 11
Mizuna—Apr 17 – May 6Jul 11 – Jul 28May 27 – Jun 6
CucumberApr 22 – May 6May 27 – Jun 13Jun 13 – Jun 30Jul 23 – Aug 12
Zucchini / Summer SquashApr 22 – May 6May 20 – Jun 6Jun 13 – Jun 30Jul 11 – Jul 26
Winter SquashApr 22 – May 6May 20 – Jun 6—Aug 15 – Sep 14
PumpkinApr 22 – May 6May 20 – Jun 6—Aug 25 – Sep 24
Cantaloupe / MuskmelonApr 22 – May 6May 27 – Jun 13—Aug 12 – Sep 1
WatermelonApr 22 – May 6May 27 – Jun 13—Aug 12 – Sep 11
Rhubarb—Apr 22 – May 9——
Horseradish—Apr 22 – May 9——
SunflowerApr 22 – May 6May 20 – Jun 6—Aug 5 – Sep 4
Carrot—Apr 24 – May 13Jun 20 – Jul 7Jun 28 – Jul 18
Turnip—Apr 24 – May 13Jul 18 – Aug 4Jun 8 – Jun 28
Mustard Greens—Apr 24 – May 13Jul 18 – Aug 4May 29 – Jun 13
Rapini (Broccoli Raab)—Apr 24 – May 13Jul 11 – Jul 28Jun 8 – Jun 28
Chervil—Apr 24 – May 13Jul 18 – Aug 4Jun 8 – Jun 28
Chives—Apr 29 – May 16——
Asparagus—Apr 29 – May 16——
Sorrel—Apr 29 – May 16——
Potato—May 1 – May 20—Jul 15 – Sep 3
Cilantro / Coriander—May 1 – May 20Jul 4 – Jul 21Jun 20 – Jul 15
Salsify—May 1 – May 20—Aug 24 – Oct 3
Borage—May 1 – May 20Jul 11 – Jul 28Jun 30 – Jul 20
Globe Artichoke—May 6 – May 23——
Parsnip—May 8 – May 27—Aug 21 – Sep 20
Dill—May 15 – Jun 3Jul 11 – Jul 28Jun 29 – Jul 19
Bush Bean—May 22 – Jun 10Jun 20 – Jul 7Jul 16 – Jul 26
Pole Bean—May 22 – Jun 10—Jul 26 – Aug 5
Sweet Corn—May 22 – Jun 10—Jul 26 – Sep 4
Edamame (Soybean)—May 22 – Jun 10—Aug 10 – Sep 4
Amaranth (Leaf)—May 22 – Jun 10—Jun 26 – Jul 16
Lima Bean—May 29 – Jun 17—Aug 7 – Sep 6
Southern Pea (Cowpea)—May 29 – Jun 17—Aug 2 – Sep 1
Rutabaga——May 30 – Jun 16—
Sweet Potato—Jun 3 – Jun 20—Sep 8 – Oct 8
Garlic——Sep 26 – Oct 13—

Windows are ~1–2 week bands around each date. Frost dates are a statewide average from NOAA/NCEI normals; your town may differ by two weeks or more. Calendar year 2026.