My Planting Calendar

Mountain West vegetable planting guide

Elevation drives everything — short frost-free windows, cool nights, intense sun, dry air. Choose short-season varieties and use season extension.

FROST-FREE DAYS
118–173
USDA ZONES
10a–9a
LAST SPRING FROST RANGE
April 20 – May 20

States in this region

Montana calendar →Idaho calendar →Wyoming calendar →Colorado calendar →Utah calendar →Nevada calendar →

Representative planting calendar

Based on Idaho (138 frost-free days) — near the middle of this region. Pick your state above, or use the generator with your ZIP for exact dates.

CropStart indoorsSow / transplant outFirst harvest
CeleriacFeb 15 – Mar 1May 3 – May 20Aug 18 – Sep 7
OnionFeb 22 – Mar 8Apr 12 – Apr 29Jul 18 – Aug 17
LeekFeb 22 – Mar 8Apr 19 – May 6Aug 4 – Sep 23
CeleryFeb 22 – Mar 8May 3 – May 20Aug 18 – Sep 27
RosemaryFeb 22 – Mar 8May 10 – May 27Aug 15 – Sep 14
EggplantMar 1 – Mar 15May 24 – Jun 10Aug 4 – Aug 24
ParsleyMar 1 – Mar 15Apr 19 – May 6Jul 5 – Jul 25
ShallotMar 1 – Mar 15Apr 12 – Apr 29Jul 18 – Aug 17
Bell PepperMar 8 – Mar 22May 17 – Jun 3Jul 23 – Aug 22
Chili PepperMar 8 – Mar 22May 17 – Jun 3Aug 2 – Sep 1
Green Onion / ScallionMar 8 – Mar 22Apr 5 – Apr 22Jun 11 – Jul 1
ThymeMar 8 – Mar 22May 3 – May 20Jul 24 – Aug 8
OreganoMar 8 – Mar 22May 3 – May 20Jul 29 – Aug 8
MintMar 8 – Mar 22Apr 26 – May 13Jul 12 – Aug 1
SageMar 8 – Mar 22May 3 – May 20Jul 24 – Aug 8
TarragonMar 8 – Mar 22Apr 26 – May 13Jul 2 – Aug 1
GingerMar 8 – Mar 22May 24 – Jun 10Jan 26 – Mar 27
TurmericMar 8 – Mar 22May 24 – Jun 10Jan 26 – Mar 27
TomatoMar 15 – Mar 29May 10 – May 27Jul 16 – Aug 10
TomatilloMar 15 – Mar 29May 10 – May 27Jul 31 – Aug 25
Ground CherryMar 15 – Mar 29May 10 – May 27Jul 26 – Aug 15
Sweet MarjoramMar 15 – Mar 29May 10 – May 27Jul 16 – Aug 5
Lemon BalmMar 15 – Mar 29Apr 26 – May 13Jul 12 – Aug 1
Shiso (Perilla)Mar 15 – Mar 29May 10 – May 27Jul 26 – Aug 15
KaleMar 22 – Apr 5Apr 12 – Apr 29Jun 8 – Jun 23
BroccoliMar 22 – Apr 5Apr 19 – May 6Jun 25 – Jul 20
CauliflowerMar 22 – Apr 5Apr 19 – May 6Jun 25 – Jul 25
CabbageMar 22 – Apr 5Apr 12 – Apr 29Jun 18 – Jul 28
Brussels SproutsMar 22 – Apr 5Apr 19 – May 6Jul 25 – Aug 24
OkraMar 29 – Apr 12May 17 – Jun 3Jul 13 – Jul 28
BasilMar 29 – Apr 12May 17 – Jun 3Jun 23 – Jul 23
Collard GreensMar 29 – Apr 12Apr 12 – Apr 29Jun 13 – Jul 3
KohlrabiMar 29 – Apr 12Apr 12 – Apr 29Jun 3 – Jun 18
Endive & EscaroleMar 29 – Apr 12Apr 19 – May 6Jul 20 – Aug 4
RadicchioMar 29 – Apr 12Apr 19 – May 6Jun 25 – Aug 4
ChayoteMar 29 – Apr 12May 17 – Jun 3Sep 21 – Oct 21
Malabar SpinachMar 29 – Apr 12May 17 – Jun 3Jul 18 – Aug 2
Summer SavoryMar 29 – Apr 12May 10 – May 27Jul 11 – Jul 26
Pea—Mar 31 – Apr 19May 30 – Jun 14
Spinach—Mar 31 – Apr 19May 12 – May 20
Mache (Corn Salad)—Mar 31 – Apr 19May 20 – Jun 4
LettuceApr 5 – Apr 19Apr 19 – May 6May 26 – Jun 25
Swiss ChardApr 5 – Apr 19Apr 19 – May 6Jun 15 – Jun 25
Bok Choy / Pak ChoiApr 5 – Apr 19Apr 19 – May 6May 31 – Jun 15
Fennel (Bulb)Apr 5 – Apr 19Apr 26 – May 13Jul 7 – Aug 1
Napa CabbageApr 5 – Apr 19Apr 19 – May 6Jun 15 – Jul 10
Bitter MelonApr 5 – Apr 19May 17 – Jun 3Jul 18 – Aug 7
CucamelonApr 5 – Apr 19May 17 – Jun 3Jul 28 – Aug 7
New Zealand SpinachApr 5 – Apr 19May 10 – May 27Jul 6 – Jul 26
PeanutApr 5 – Apr 19May 10 – May 27Aug 25 – Oct 14
WatercressApr 5 – Apr 19Apr 19 – May 6Jun 15 – Jun 25
Luffa (Loofah Gourd)Apr 5 – Apr 19May 17 – Jun 3Aug 22 – Oct 21
Beet—Apr 7 – Apr 26Jun 1 – Jun 21
Radish—Apr 7 – Apr 26May 4 – May 12
Arugula—Apr 7 – Apr 26May 12 – May 22
Fava Bean (Broad Bean)—Apr 7 – Apr 26Jun 26 – Jul 11
Tatsoi—Apr 7 – Apr 26May 17 – Jun 1
Mizuna—Apr 7 – Apr 26May 17 – May 27
CucumberApr 12 – Apr 26May 17 – Jun 3Jul 13 – Aug 2
Zucchini / Summer SquashApr 12 – Apr 26May 10 – May 27Jul 1 – Jul 16
Winter SquashApr 12 – Apr 26May 10 – May 27Aug 5 – Sep 4
PumpkinApr 12 – Apr 26May 10 – May 27Aug 15 – Sep 14
Cantaloupe / MuskmelonApr 12 – Apr 26May 17 – Jun 3Aug 2 – Aug 22
WatermelonApr 12 – Apr 26May 17 – Jun 3Aug 2 – Sep 1
Rhubarb—Apr 12 – Apr 29—
Horseradish—Apr 12 – Apr 29—
SunflowerApr 12 – Apr 26May 10 – May 27Jul 26 – Aug 25
Carrot—Apr 14 – May 3Jun 18 – Jul 8
Turnip—Apr 14 – May 3May 29 – Jun 18
Mustard Greens—Apr 14 – May 3May 19 – Jun 3
Rapini (Broccoli Raab)—Apr 14 – May 3May 29 – Jun 18
Chervil—Apr 14 – May 3May 29 – Jun 18
Chives—Apr 19 – May 6—
Asparagus—Apr 19 – May 6—
Sorrel—Apr 19 – May 6—
Potato—Apr 21 – May 10Jul 5 – Aug 24
Cilantro / Coriander—Apr 21 – May 10Jun 10 – Jul 5
Salsify—Apr 21 – May 10Aug 14 – Sep 23
Borage—Apr 21 – May 10Jun 20 – Jul 10
Globe Artichoke—Apr 26 – May 13—
Parsnip—Apr 28 – May 17Aug 11 – Sep 10
Dill—May 5 – May 24Jun 19 – Jul 9
Bush Bean—May 12 – May 31Jul 6 – Jul 16
Pole Bean—May 12 – May 31Jul 16 – Jul 26
Sweet Corn—May 12 – May 31Jul 16 – Aug 25
Edamame (Soybean)—May 12 – May 31Jul 31 – Aug 25
Amaranth (Leaf)—May 12 – May 31Jun 16 – Jul 6
Lima Bean—May 19 – Jun 7Jul 28 – Aug 27
Southern Pea (Cowpea)—May 19 – Jun 7Jul 23 – Aug 22
Sweet Potato—May 24 – Jun 10Aug 29 – Sep 28
Rutabaga———
Garlic———