Les quatre dates qui comptent
| Date | Quand | Ce que cela veut dire |
|---|---|---|
| Dernier gel de printemps (50 %) | Apr 12 | Une année sur deux gèle après cette date. C’est une moyenne, pas une garantie. |
| Dernier gel de printemps (10 %) | Apr 29 | Une année sur dix seulement gèle après. À retenir pour ce que vous ne pouvez pas vous permettre de resemer. |
| Premier gel d’automne (50 %) | Oct 29 | Une année sur deux gèle avant cette date. Les cultures d’automne se comptent à rebours depuis là. |
| Premier gel d’automne (10 %) | Oct 16 | Une année à gel précoce. Si une culture doit finir, visez une récolte avant cette date. |
Semis de printemps et d’été à Indianapolis
Les dates sont calculées à partir du dernier gel propre à ce lieu, pas d’un tableau générique par zone. Les « meilleurs jours lunaires » sont les jours de chaque fenêtre qui tombent dans la phase traditionnelle de la culture — la règle même de l’application.
| Culture | Semis à l’abri | Plantation dehors | Meilleurs jours lunaires | Jours avant récolte |
|---|---|---|---|---|
| Strawberry (crowns) transplant |
— | Feb 11 – Mar 22 | Mar 3 Full Moon |
perennial — first real harvest next season |
| Garlic cloves/sets Mieux vaut semer en automne — voir plus bas |
— | Feb 24 – Mar 27 | Mar 4–9 Waning Gibbous |
240–300 |
| Asparagus (crowns) transplant |
— | Mar 1 – Apr 5 | Mar 25 First Quarter |
perennial — first real harvest 2–3 years |
| Chives either |
Feb 15 | Mar 1 – Apr 5 | Mar 19–24 Waxing Crescent |
75–90 |
| Onion (from sets/transplants) cloves/sets |
— | Mar 1 – Apr 5 | Mar 4–9 Waning Gibbous |
90–120 |
| Peas (English/snap) direct sow |
— | Mar 1 – Apr 5 | Mar 25 First Quarter |
55–75 |
| Spinach direct sow |
— | Mar 1 – Apr 5 | Mar 19–24 Waxing Crescent |
35–50 |
| Cabbage transplant |
Feb 8 | Mar 8 – Apr 5 | Mar 19–24 Waxing Crescent |
65–90 |
| Collards either |
Mar 1 | Mar 8 – Apr 26 | Mar 19–24 Waxing Crescent |
55–85 |
| Kale either |
Mar 1 | Mar 8 – Apr 12 | Mar 19–24 Waxing Crescent |
50–65 |
| Lettuce (leaf) either |
Mar 8 | Mar 8 – May 3 | Mar 19–24 Waxing Crescent |
40–55 |
| Potato cloves/sets |
— | Mar 8 – Apr 12 | Apr 1 Full Moon |
70–120 |
| Radish direct sow |
— | Mar 8 – May 3 | Mar 8–10, Apr 2–4 Waning Gibbous |
22–35 |
| Turnip direct sow |
— | Mar 8 – Apr 19 | Mar 8–10, Apr 2–4 Waning Gibbous |
40–60 |
| Broccoli transplant |
Feb 8 | Mar 13 – Apr 12 | Mar 19–24 Waxing Crescent |
55–80 |
| Brussels Sprouts transplant |
Feb 8 | Mar 13 – Apr 12 | Mar 19–24 Waxing Crescent |
90–110 |
| Leek transplant |
Feb 1 | Mar 13 – Apr 12 | Apr 2–7 Waning Gibbous |
100–120 |
| Lettuce (head) transplant |
Feb 22 | Mar 13 – Apr 12 | Mar 19–24 Waxing Crescent |
60–85 |
| Parsley either |
Feb 8 | Mar 13 – Apr 19 | Mar 19–24 Waxing Crescent |
70–90 |
| Parsnip direct sow |
— | Mar 13 – Apr 19 | Apr 1 Full Moon |
100–150 |
| Shallot cloves/sets Mieux vaut semer en automne — voir plus bas |
— | Mar 13 – Apr 12 | Apr 2–7 Waning Gibbous |
90–120 |
| Beet direct sow |
— | Mar 15 – May 3 | Apr 1, May 1 Full Moon |
50–65 |
| Kohlrabi either |
Mar 1 | Mar 15 – Apr 19 | Mar 19–24 Waxing Crescent |
45–60 |
| Carrot direct sow |
— | Mar 22 – May 3 | Apr 1, May 1 Full Moon |
65–85 |
| Cauliflower transplant |
Feb 8 | Mar 22 – Apr 12 | Mar 22–24 Waxing Crescent |
55–80 |
| Cilantro direct sow |
— | Mar 22 – May 3 | Mar 22–24, Apr 18–20 Waxing Crescent |
45–70 |
| Swiss Chard direct sow |
— | Mar 22 – May 12 | Mar 22–24, Apr 18–20 Waxing Crescent |
50–60 |
| Dill direct sow |
— | Mar 29 – May 12 | Apr 18–22 Waxing Crescent |
40–60 |
| Cucumber either |
Mar 22 | Apr 12 – May 12 | Apr 23 First Quarter |
50–70 |
| Green Beans (bush) direct sow |
— | Apr 12 – May 27 | Apr 23, May 23 First Quarter |
50–65 |
| Oregano transplant |
Feb 15 | Apr 12 – May 3 | Apr 23 First Quarter |
cut as needed |
| Sage transplant |
Feb 15 | Apr 12 – May 3 | Apr 23 First Quarter |
cut as needed |
| Sweet Corn direct sow |
— | Apr 12 – May 27 | Apr 23, May 23 First Quarter |
60–100 |
| Thyme transplant |
Feb 15 | Apr 12 – May 3 | Apr 23 First Quarter |
cut as needed |
| Zucchini / Summer Squash either |
Mar 22 | Apr 12 – May 12 | Apr 23 First Quarter |
45–60 |
| Basil either |
Mar 1 | Apr 19 – May 12 | Apr 19–22 Waxing Crescent |
30–60 |
| Dry Beans direct sow |
— | Apr 19 – May 17 | Apr 23 First Quarter |
85–100 |
| Pole Beans direct sow |
— | Apr 19 – May 22 | Apr 23 First Quarter |
60–75 |
| Pumpkin direct sow |
Mar 22 | Apr 19 – May 17 | Apr 23 First Quarter |
90–120 |
| Rosemary transplant |
Apr 12 | Apr 19 – May 12 | Apr 23 First Quarter |
cut as needed |
| Tomatillo transplant |
Mar 1 | Apr 19 – May 12 | Apr 23 First Quarter |
60–75 |
| Tomato transplant |
Mar 1 | Apr 19 – May 12 | Apr 23 First Quarter |
60–85 |
| Winter Squash direct sow |
Mar 22 | Apr 19 – May 17 | Apr 23 First Quarter |
85–110 |
| Cantaloupe / Muskmelon either |
Mar 22 | Apr 26 – May 17 | — First Quarter |
75–90 |
| Eggplant transplant |
Feb 15 | Apr 26 – May 17 | — First Quarter |
60–90 |
| Okra direct sow |
Mar 15 | Apr 26 – May 22 | — First Quarter |
50–70 |
| Pepper transplant |
Feb 15 | Apr 26 – May 17 | — First Quarter |
60–90 |
| Sweet Potato slips |
— | Apr 26 – May 22 | May 2–7 Waning Gibbous |
90–150 |
| Watermelon either |
Mar 22 | Apr 26 – May 17 | — First Quarter |
70–90 |
Semis d’automne à Indianapolis
Les dates d’automne se comptent à rebours depuis le premier gel, et elles rajoutent du temps pour le « facteur d’automne » : les jours raccourcissent et refroidissent, donc une culture pousse plus lentement que ne le promet le sachet. Semer trop tard est de loin la première cause d’échec d’un potager d’automne.
| Culture | Semer ou mettre en place | Meilleurs jours lunaires | Jours avant récolte | Rusticité |
|---|---|---|---|---|
| Tomato | Jun 13 – Jul 19 | Jun 21 | 60–85 | very tender |
| Brussels Sprouts | Jun 16 – Jul 3 | Jun 16–20 | 90–110 | hardy |
| Potato | Jun 21 – Jul 23 | Jun 29 | 70–120 | semi-hardy |
| Sweet Corn | Jun 26 – Jul 19 | — | 60–100 | tender |
| Pole Beans | Jul 6 – Jul 19 | — | 60–75 | tender |
| Parsley | Jul 9 – Jul 23 | Jul 15–20 | 70–90 | semi-hardy |
| Okra | Jul 11 – Aug 10 | Jul 21 | 50–70 | very tender |
| Cabbage | Jul 16 – Jul 28 | Jul 16–20 | 65–90 | hardy |
| Carrot | Jul 16 – Jul 28 | — | 65–85 | semi-hardy |
| Collards | Jul 16 – Aug 7 | Jul 16–20 | 55–85 | hardy |
| Cucumber | Jul 16 – Jul 29 | Jul 21 | 50–70 | tender |
| Broccoli | Jul 21 – Aug 7 | — | 55–80 | hardy |
| Cauliflower | Jul 21 – Aug 7 | — | 55–80 | semi-hardy |
| Green Beans (bush) | Jul 21 – Jul 29 | Jul 21 | 50–65 | tender |
| Lettuce (head) | Jul 21 – Aug 2 | — | 60–85 | semi-hardy |
| Peas (English/snap) | Jul 21 – Aug 7 | Jul 21 | 55–75 | hardy |
| Beet | Jul 26 – Aug 12 | Jul 29 | 50–65 | semi-hardy |
| Kale | Jul 26 – Aug 12 | — | 50–65 | hardy |
| Swiss Chard | Jul 26 – Aug 12 | — | 50–60 | semi-hardy |
| Zucchini / Summer Squash | Jul 26 – Aug 3 | — | 45–60 | tender |
| Basil | Jul 31 – Aug 18 | Aug 13–18 | 30–60 | very tender |
| Kohlrabi | Jul 31 – Aug 17 | Aug 13–17 | 45–60 | hardy |
| Cilantro | Aug 5 – Aug 17 | Aug 13–17 | 45–70 | semi-hardy |
| Lettuce (leaf) | Aug 5 – Aug 22 | Aug 13–18 | 40–55 | semi-hardy |
| Turnip | Aug 5 – Aug 22 | — | 40–60 | hardy |
| Spinach | Aug 10 – Aug 27 | Aug 13–18 | 35–50 | hardy |
| Dill | Aug 15 – Aug 22 | Aug 15–18 | 40–60 | semi-hardy |
| Radish | Aug 15 – Sep 9 | Aug 29–Sep 3 | 22–35 | hardy |
| Garlic | Sep 29 – Nov 19 | Sep 29–Oct 2, Oct 27–28 | 240–300 | hardy |
| Shallot | Oct 13 – Nov 13 | Oct 27–31 | 90–120 | hardy |
D’où viennent ces chiffres
Les dates de gel de cette page sont des normales observées en station, pas des estimations : elles viennent de Indianapolis Eagle Creek Ap (GHCN USW00053842), l’une des 6 808 stations américaines des Climate Normals 1991–2020 de la NOAA. La zone de rusticité vient de l’USDA Plant Hardiness Zone Map 2023. Le calendrier des cultures est exprimé en décalages par rapport à vos gelées, d’après les guides de semis des Extensions universitaires.
Quelle est la précision de tout cela ?
Extension recommendations for the same crop routinely disagree by two to four weeks, and occasionally more, so these offsets should be presented as windows and starting points rather than deadlines. Three things drive the spread. (1) Regional risk tolerance: for warm-season crops, Colorado State and Utah State put tomatoes, peppers and melons out about 14 days after the last frost, while University of Missouri's calendar works out to roughly 25-35 days after the last frost and University of Maryland's window runs from the frost date itself out to 45 days past it. That is a real 6-week spread for the single most popular garden crop, and it exists because a short-season mountain state is optimizing against a short season while a humid continental state is optimizing against cold, wet spring soil. (2) Soil temperature versus calendar date: most Extension services now say the honest trigger is soil temperature at 4 inches, not the frost date, and the frost-relative number is a convenience translation. A cold, wet spring can push the real date two or three weeks past the calendar recommendation. (3) Days-to-maturity is variety-specific and is measured differently for direct-seeded versus transplanted crops - seed catalogs count from transplant date for tomatoes, peppers, eggplant and cole crops, but from sowing for roots and greens - so a 'days to maturity' range of 60-85 for tomato is genuinely 60-85 depending on which packet you bought. Additionally, the average last frost is a 50% probability, meaning half of all years have a frost after that date; Extension services commonly advise waiting 1-2 weeks past it for anything frost-tender, or being prepared to cover. Treat every number here as plus or minus about 10-14 days.
Sur la station elle-même : une station météo, c’est un point. Les villes gardent leur chaleur, les vallées accumulent l’air froid, et un jardin en versant nord peut avoir deux semaines de retard sur un autre à un mile de là. Prenez cette page comme point de départ et laissez votre jardin la corriger — c’est exactement à cela que sert le journal de l’application.
Lieux proches
Rappels de semis pour Indianapolis
Un mot bref à chaque nouvelle et pleine lune sur ce qui est dans sa fenêtre en ce moment à Indianapolis — calculé d’après les dates de gel de cette page. Gratuit, un clic pour arrêter.
We store your address to send the email and nothing else. No ads, never sold, unsubscribe any time. See our privacy policy.
Vous le voulez au jardin, sur votre téléphone ? Moon Phase Garden garde vos dates de gel, vos fenêtres de semis et la phase de lune du soir au même endroit, fonctionne hors ligne, et vous laisse remplacer ces dates par ce que fait vraiment votre jardin. Gratuit et sans publicité.
Disponible sur Google Play · Planifiez une planche · Récolter chaque mois