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Rel. frost
Last spring frost (0°C) 9 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 181 days 9 Apr – 7 Oct
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
20 Mar – 3 Apr
18 Jun
5-7 wk
8 May
23 Jul
4 wk after
2 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Mar
30 Jun
4-6 wk
23 Apr
28 Jul
2 wk after
2 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
19 Feb – 19 Mar
8-12 wk
14 May
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Jan – 8 Feb
13 Jun
5-7 wk
15 Mar
18 Jul
4 wk before
28 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
16 – 23 Apr
22 May
3-4 wk
14 May
12 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
29 Apr – 6 May
10 Jun
4-5 wk
3 Jun
8 Jul
8 wk after
15 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 May
3-4 wk
5 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Jan – 12 Feb
30 Mar
8-12 wk
9 Apr
25 May
Vid frost
19 Apr
15 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
2 Apr
14 Jun
1 wk before
2 Apr
4 Jun
1 wk before
Maize
Zea mays
Greenhouse
3 – 10 Apr
12 May
3-4 wk
1 May
2 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
7 Jul
3-4 wk
8 May
28 Jul
4 wk after
19 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Jan – 8 Feb
13 Jun
5-7 wk
15 Mar
18 Jul
4 wk before
28 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
3 – 17 Mar
30 May
4-6 wk
14 Apr
27 Jun
1 wk after
14 Apr
17 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Jan – 8 Feb
23 Jun
5-7 wk
15 Mar
28 Jul
4 wk before
2 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
28 Apr – 5 May
27 May
3-4 wk
26 May
17 Jun
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
9 Jun
3-4 wk
8 May
30 Jun
4 wk after
19 Apr
20 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Mar
25 Jun
4-6 wk
23 Apr
23 Jul
2 wk after
Lettuce
Lactuca sativa
5 – 12 Mar
12 Jul
3-4 wk
2 Apr
2 Aug
1 wk before
2 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Feb – 5 Mar
25 Jun
4-6 wk
2 Apr
23 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Feb – 14 Mar
4 Jun
2-4 wk
28 Mar
18 Jun
2 wk before
28 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
2 Apr
14 Jun
1 wk before
2 Apr
4 Jun
1 wk before
Spinach
Spinacia oleracea
25 Feb – 4 Mar
27 Jul
3-4 wk
25 Mar
17 Aug
2 wk before
22 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 May
4-6 wk
17 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
6 – 20 Mar
21 Apr
6-8 wk
1 May
2 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
16 – 30 Apr
29 May
2-4 wk
14 May
12 Jun
5 wk after
30 Apr
2 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Mar
25 Jun
4-6 wk
23 Apr
23 Jul
2 wk after
Garden pea
Pisum sativum
25 Feb – 4 Mar
27 Jun
3-4 wk
25 Mar
18 Jul
2 wk before
2 Apr
8 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
14 – 28 Apr
5 May
4-6 wk
26 May
2 Jun
7 wk after
Lemon balm
Melissa officinalis
29 Jan – 12 Feb
23 May
8-10 wk
9 Apr
18 Jul
Vid frost
30 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
2 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
18 Jan – 1 Feb
6 Jun
6-8 wk
15 Mar
18 Jul
4 wk before
2 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
31 Dec – 28 Jan
23 May
8-12 wk
25 Mar
18 Jul
2 wk before
30 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
19 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
27 Feb – 13 Mar
8 May
8-10 wk
8 May
3 Jul
4 wk after
Common thyme
Thymus vulgaris
12 – 26 Feb
13 May
8-10 wk
23 Apr
8 Jul
2 wk after
Oregano
Origanum vulgare
18 Feb – 4 Mar
27 May
6-8 wk
15 Apr
8 Jul
1 wk after
30 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
28 Jan – 11 Feb
27 May
6-8 wk
25 Mar
8 Jul
2 wk before
2 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
30 Jan – 27 Feb
9 Apr
10-14 wk
8 May
18 Jun
4 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
Fleece
28 Apr – 5 May
12 May
3-4 wk
26 May
2 Jun
7 wk after
Cornflower
Centaurea cyanus
25 Mar
18 Jul
2 wk before
2 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
17 – 31 Mar
28 Mar
8-10 wk
26 May
7 wk after
Sweet William
Dianthus barbatus
28 Jan – 11 Feb
6-8 wk
25 Mar
2 wk before
14 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
31 Mar – 14 Apr
11 Apr
6-8 wk
26 May
7 wk after
17 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
25 Mar – 8 Apr
17 Apr
6-8 wk
20 May
29 May
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
5 Mar – 2 Apr
1 May
4-8 wk
30 Apr
29 May
3 wk after
30 Apr
19 May
3 wk after
Foxglove
Digitalis purpurea
14 – 28 Jan
8-10 wk
25 Mar
2 wk before
19 Apr
1 wk after
Busy lizzie
Impatiens walleriana
11 Mar – 8 Apr
23 May
8-12 wk
3 Jun
18 Jul
8 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
21 Apr
6-8 wk
26 May
2 Jun
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 Apr
4-6 wk
26 May
7 wk after
Chinese lantern
Physalis alkekengi
27 Feb – 13 Mar
23 Apr
8-10 wk
8 May
18 Jun
4 wk after
Love in a mist
Nigella damascena
2 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
19 Mar – 2 Apr
24 Apr
6-8 wk
14 May
5 Jun
5 wk after
25 May
26 May
7 wk after
Purple-top vervain
Verbena bonariensis
13 Feb – 13 Mar
23 Apr
8-12 wk
8 May
18 Jun
4 wk after
Cardoon
Cynara cardunculus
3 – 31 Mar
24 Mar
8-12 wk
26 May
7 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
3 – 31 Mar
28 Mar
8-12 wk
26 May
7 wk after
Globe amaranth
Gomphrena globosa
Fleece
31 Mar – 14 Apr
11 Apr
6-8 wk
26 May
7 wk after
Corn poppy
Papaver rhoeas
2 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
8 Jan – 5 Feb
13 May
8-12 wk
2 Apr
8 Jul
1 wk before
14 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
25 Mar – 8 Apr
7 Apr
8-10 wk
3 Jun
8 wk after
Sweet pea
Lathyrus odoratus
28 Jan – 18 Feb
3 Jun
5-8 wk
25 Mar
8 Jul
2 wk before
Stock
Matthiola incana
5 – 19 Feb
6 Jun
6-8 wk
2 Apr
18 Jul
1 wk before
19 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
28 Jan – 11 Feb
7 May
6-8 wk
25 Mar
18 Jun
2 wk before
19 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
14 – 28 Apr
20 Apr
4-6 wk
26 May
7 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Jan
23 May
8-10 wk
15 Mar
18 Jul
4 wk before
14 Apr
8 Jul
1 wk after
Petunia
Petunia
3 – 31 Mar
28 Mar
8-12 wk
26 May
7 wk after
Sweet Scabious
Scabiosa atropurpurea
13 – 27 Mar
7 May
6-8 wk
8 May
18 Jun
4 wk after
15 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
14 – 28 Apr
5 May
4-6 wk
26 May
2 Jun
7 wk after
Common morning glory
Ipomoea purpurea
Fleece
21 Apr – 5 May
12 May
3-5 wk
26 May
2 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
14 – 28 Apr
1 May
4-6 wk
26 May
29 May
7 wk after
15 May
19 May
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
11 Mar – 8 Apr
27 Apr
8-12 wk
3 Jun
22 Jun
8 wk after
Bee balm
Monarda didyma
15 Jan – 12 Feb
23 Apr
8-12 wk
9 Apr
18 Jun
Vid frost
30 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
28 Jan – 11 Feb
7 Apr
6-8 wk
25 Mar
19 May
2 wk before
19 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
25 Mar
18 Jun
2 wk before
2 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
18 Jan – 1 Feb
27 May
6-8 wk
15 Mar
8 Jul
4 wk before
28 Mar
28 Jun
2 wk before
Bishop's flower
Ammi majus
8 – 22 Mar
10 Jun
4-6 wk
19 Apr
8 Jul
1 wk after
19 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
19 Feb – 5 Mar
21 Mar
10-12 wk
14 May
30 May
5 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
17 Jun
3-4 wk
26 May
8 Jul
7 wk after
30 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
6 Jun
6-8 wk
26 May
18 Jul
7 wk after
15 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
19 Mar – 2 Apr
21 Apr
6-8 wk
14 May
2 Jun
5 wk after
15 May
23 May
5 wk after
Hollyhock
Alcea rosea
28 Jan – 11 Feb
6-8 wk
25 Mar
2 wk before
19 Apr
1 wk after
Alpine delphinium
Delphinium elatum
29 Jan – 26 Feb
23 Apr
8-12 wk
23 Apr
18 Jun
2 wk after
30 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
21 Apr
6-8 wk
26 May
2 Jun
7 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Mar
27 May
6-8 wk
8 May
8 Jul
4 wk after
15 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
4 – 18 Feb
13 Apr
8-10 wk
15 Apr
8 Jun
1 wk after
30 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
17 Mar – 14 Apr
21 Apr
6-10 wk
26 May
2 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
2 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
13 May
8-10 wk
26 May
8 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
28 Jan – 11 Feb
7 May
6-8 wk
25 Mar
18 Jun
2 wk before
19 Apr
8 Jun
1 wk after