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Method
Rel. frost
Last spring frost (0°C) 14 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 193 days 14 Apr – 24 Oct
Probability that frost is over

25% = 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)
24 Feb – 10 Mar
14 Jun
5-7 wk
14 Apr
19 Jul
0 wk
18 Apr
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Mar
26 Jun
4-6 wk
14 Apr
24 Jul
0 wk
18 Apr
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
4 Feb – 4 Mar
21 Apr
8-12 wk
29 Apr
16 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Feb – 10 Mar
9 Jun
5-7 wk
14 Apr
14 Jul
0 wk
14 Apr
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
13 – 20 Apr
15 Jun
3-4 wk
11 May
6 Jul
4 wk after
Florence Fennel
Foeniculum vulgare
22 – 29 Apr
6 Jun
4-5 wk
27 May
4 Jul
6 wk after
2 Jun
24 Jun
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
4 – 11 May
24 May
3-4 wk
1 Jun
14 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Jan – 17 Feb
30 Mar
8-12 wk
14 Apr
25 May
0 wk
5 May
15 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Apr
14 Jun
1 wk after
18 Apr
4 Jun
1 wk after
Maize
Zea mays
Fleece
1 – 8 Apr
5 Jun
3-4 wk
29 Apr
26 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Mar – 1 Apr
3 Jul
3-4 wk
22 Apr
24 Jul
1 wk after
5 May
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Apr
4 Jul
0 wk
14 Apr
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Feb – 10 Mar
9 Jun
5-7 wk
14 Apr
14 Jul
0 wk
14 Apr
4 Jul
0 wk
Potato
Solanum tuberosum
19 Mar – 2 Apr
26 May
4-6 wk
30 Apr
23 Jun
2 wk after
30 Apr
13 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Feb – 10 Mar
19 Jun
5-7 wk
14 Apr
24 Jul
0 wk
18 Apr
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
29 Apr – 6 May
20 Jun
3-4 wk
27 May
11 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Mar – 1 Apr
3 Jun
3-4 wk
22 Apr
24 Jun
1 wk after
5 May
14 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Mar
21 Jun
4-6 wk
14 Apr
19 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Mar
8 Jul
3-4 wk
14 Apr
29 Jul
0 wk
18 Apr
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Mar
21 Jun
4-6 wk
14 Apr
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 – 31 Mar
31 May
2-4 wk
14 Apr
14 Jun
0 wk
14 Apr
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 Apr
14 Jun
1 wk after
18 Apr
4 Jun
1 wk after
Spinach
Spinacia oleracea
17 – 24 Mar
23 Jul
3-4 wk
14 Apr
13 Aug
0 wk
10 Apr
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
16 – 30 May
4-6 wk
27 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
4 – 18 Mar
15 May
6-8 wk
29 Apr
26 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 Apr
22 Jun
2-4 wk
11 May
6 Jul
4 wk after
2 Jun
26 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Mar
21 Jun
4-6 wk
14 Apr
19 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Mar
23 Jun
3-4 wk
14 Apr
14 Jul
0 wk
18 Apr
4 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
15 – 29 Apr
29 May
4-6 wk
27 May
26 Jun
6 wk after
Lemon balm
Melissa officinalis
3 – 17 Feb
19 May
8-10 wk
14 Apr
14 Jul
0 wk
19 May
4 Jul
5 wk after
Dill
Anethum graveolens
18 Apr
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
Season too short
17 Feb – 3 Mar
2 Jun
6-8 wk
14 Apr
14 Jul
0 wk
2 Apr
4 Jul
2 wk before
Spearmint
Mentha spicata
20 Jan – 17 Feb
19 May
8-12 wk
14 Apr
14 Jul
0 wk
19 May
4 Jul
5 wk after
Coriander
Coriandrum sativum
14 Apr
13 Aug
0 wk
5 May
3 Aug
3 wk after
Garden sage
Salvia officinalis
11 – 25 Feb
4 May
8-10 wk
22 Apr
29 Jun
1 wk after
Common thyme
Thymus vulgaris
3 – 17 Feb
9 May
8-10 wk
14 Apr
4 Jul
0 wk
Oregano
Origanum vulgare
17 Feb – 3 Mar
23 May
6-8 wk
14 Apr
4 Jul
0 wk
19 May
24 Jun
5 wk after
Parsley
Petroselinum crispum
17 Feb – 3 Mar
23 May
6-8 wk
14 Apr
4 Jul
0 wk
18 Apr
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
14 Jan – 11 Feb
5 Apr
10-14 wk
22 Apr
14 Jun
1 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
29 Apr – 6 May
5 Jun
3-4 wk
27 May
26 Jun
6 wk after
Cornflower
Centaurea cyanus
14 Apr
14 Jul
0 wk
18 Apr
4 Jul
1 wk after
Statice
Limonium sinuatum
2 – 16 Mar
5 May
8-10 wk
11 May
30 Jun
4 wk after
Sweet William
Dianthus barbatus
17 Feb – 3 Mar
6-8 wk
14 Apr
0 wk
30 Apr
2 wk after
Snow-on-the-mountain
Euphorbia marginata
16 – 30 Mar
19 May
6-8 wk
11 May
30 Jun
4 wk after
27 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Mar
23 May
6-8 wk
3 May
4 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Mar – 21 Apr
6 Jun
4-8 wk
19 May
4 Jul
5 wk after
19 May
24 Jun
5 wk after
Foxglove
Digitalis purpurea
3 – 17 Feb
8-10 wk
14 Apr
0 wk
5 May
3 wk after
Busy lizzie
Impatiens walleriana
4 Mar – 1 Apr
24 Jun
8-12 wk
27 May
19 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Mar
29 May
6-8 wk
11 May
10 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Fleece
15 – 29 Apr
29 Apr
4-6 wk
27 May
27 May
6 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Feb
19 Apr
8-10 wk
22 Apr
14 Jun
1 wk after
Love in a mist
Nigella damascena
14 Apr
29 Jun
0 wk
18 Apr
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
16 – 30 Mar
9 May
6-8 wk
11 May
20 Jun
4 wk after
27 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
28 Jan – 25 Feb
19 Apr
8-12 wk
22 Apr
14 Jun
1 wk after
Cardoon
Cynara cardunculus
16 Feb – 16 Mar
20 Mar
8-12 wk
11 May
15 May
4 wk after
Regal-foxtail
Ptilotus nobilis
4 Mar – 1 Apr
21 Apr
8-12 wk
27 May
16 Jun
6 wk after
Globe amaranth
Gomphrena globosa
1 – 15 Apr
5 May
6-8 wk
27 May
16 Jun
6 wk after
Corn poppy
Papaver rhoeas
14 Apr
14 Jul
0 wk
18 Apr
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
20 Jan – 17 Feb
9 May
8-12 wk
14 Apr
4 Jul
0 wk
30 Apr
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
18 Mar – 1 Apr
15 May
8-10 wk
27 May
10 Jul
6 wk after
Sweet pea
Lathyrus odoratus
17 Feb – 10 Mar
30 May
5-8 wk
14 Apr
4 Jul
0 wk
Stock
Matthiola incana
17 Feb – 3 Mar
2 Jun
6-8 wk
14 Apr
14 Jul
0 wk
5 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
17 Feb – 3 Mar
3 May
6-8 wk
14 Apr
14 Jun
0 wk
5 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
15 – 29 Apr
14 May
4-6 wk
27 May
11 Jun
6 wk after
Garden pansy
Viola × wittrockiana
3 – 17 Feb
19 May
8-10 wk
14 Apr
14 Jul
0 wk
30 Apr
4 Jul
2 wk after
Petunia
Petunia
16 Feb – 16 Mar
5 May
8-12 wk
11 May
30 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Feb – 11 Mar
3 May
6-8 wk
22 Apr
14 Jun
1 wk after
2 Jun
4 Jun
7 wk after
Common zinnia
Zinnia elegans
30 Mar – 13 Apr
6 Jun
4-6 wk
11 May
4 Jul
4 wk after
Common morning glory
Ipomoea purpurea
22 Apr – 6 May
5 Jun
3-5 wk
27 May
26 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
30 Mar – 13 Apr
6 Jun
4-6 wk
11 May
4 Jul
4 wk after
2 Jun
24 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
14 Mar – 11 Apr
21 May
8-12 wk
6 Jun
16 Jul
8 wk after
Bee balm
Monarda didyma
20 Jan – 17 Feb
19 Apr
8-12 wk
14 Apr
14 Jun
0 wk
19 May
4 Jun
5 wk after
Yarrow
Achillea millefolium
17 Feb – 3 Mar
3 Apr
6-8 wk
14 Apr
15 May
0 wk
5 May
5 May
3 wk after
Safflower
Carthamus tinctorius
14 Apr
14 Jun
0 wk
18 Apr
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
17 Feb – 3 Mar
23 May
6-8 wk
14 Apr
4 Jul
0 wk
27 Mar
24 Jun
3 wk before
Bishop's flower
Ammi majus
3 – 17 Mar
6 Jun
4-6 wk
14 Apr
4 Jul
0 wk
5 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
4 – 18 Mar
26 Mar
10-12 wk
27 May
4 Jun
6 wk after
Sunflower
Helianthus annuus
13 – 20 Apr
13 Jun
3-4 wk
11 May
4 Jul
4 wk after
19 May
24 Jun
5 wk after
China aster
Callistephus chinensis
16 – 30 Mar
2 Jun
6-8 wk
11 May
14 Jul
4 wk after
2 Jun
4 Jul
7 wk after
Annual phlox
Phlox drummondii
4 – 18 Mar
29 May
6-8 wk
29 Apr
10 Jul
2 wk after
2 Jun
30 Jun
7 wk after
Hollyhock
Alcea rosea
17 Feb – 3 Mar
6-8 wk
14 Apr
0 wk
5 May
3 wk after
Alpine delphinium
Delphinium elatum
20 Jan – 17 Feb
19 Apr
8-12 wk
14 Apr
14 Jun
0 wk
19 May
4 Jun
5 wk after
African marigold
Tagetes erecta
16 – 30 Mar
29 May
6-8 wk
11 May
10 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
25 Feb – 11 Mar
23 May
6-8 wk
22 Apr
4 Jul
1 wk after
2 Jun
24 Jun
7 wk after
Wood sage
Salvia nemorosa
3 – 17 Feb
9 Apr
8-10 wk
14 Apr
4 Jun
0 wk
19 May
25 May
5 wk after
Black-eyed susan vine
Thunbergia alata
18 Mar – 15 Apr
15 May
6-10 wk
27 May
26 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
14 Apr
14 Jul
0 wk
18 Apr
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
2 – 16 Mar
9 May
8-10 wk
11 May
4 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
17 Feb – 3 Mar
3 May
6-8 wk
14 Apr
14 Jun
0 wk
14 Apr
4 Jun
0 wk