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Rel. frost
Last spring frost (0°C) 8 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 196 days 8 Apr – 21 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)
18 Feb – 4 Mar
18 Jun
5-7 wk
8 Apr
23 Jul
0 wk
1 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Feb – 11 Mar
30 Jun
4-6 wk
8 Apr
28 Jul
0 wk
1 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
25 Jan – 22 Feb
23 Mar
8-12 wk
19 Apr
18 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Feb – 4 Mar
13 Jun
5-7 wk
8 Apr
18 Jul
0 wk
27 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
30 Mar – 6 Apr
17 May
3-4 wk
27 Apr
7 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
9 – 16 Apr
10 Jun
4-5 wk
14 May
8 Jul
5 wk after
14 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
23 – 30 Apr
14 May
3-4 wk
21 May
4 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Jan – 11 Feb
3 Apr
8-12 wk
8 Apr
29 May
0 wk
18 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Apr
18 Jun
1 wk before
1 Apr
8 Jun
1 wk before
Maize
Zea mays
Fleece
22 – 29 Mar
7 May
3-4 wk
19 Apr
28 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Mar
7 Jul
3-4 wk
14 Apr
28 Jul
1 wk after
18 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 Apr
8 Jul
0 wk
27 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Feb – 4 Mar
13 Jun
5-7 wk
8 Apr
18 Jul
0 wk
27 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
2 – 16 Mar
6 Jun
4-6 wk
13 Apr
4 Jul
1 wk after
13 Apr
24 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Feb – 4 Mar
23 Jun
5-7 wk
8 Apr
28 Jul
0 wk
1 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
16 – 23 Apr
22 May
3-4 wk
14 May
12 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Mar
17 Jun
3-4 wk
14 Apr
8 Jul
1 wk after
18 Apr
28 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Feb – 11 Mar
25 Jun
4-6 wk
8 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Mar
12 Jul
3-4 wk
8 Apr
2 Aug
0 wk
1 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Feb – 11 Mar
25 Jun
4-6 wk
8 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Feb – 13 Mar
4 Jun
2-4 wk
27 Mar
18 Jun
2 wk before
27 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 Apr
18 Jun
1 wk before
1 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
11 – 18 Mar
27 Jul
3-4 wk
8 Apr
17 Aug
0 wk
21 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 May
4-6 wk
16 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
22 Feb – 8 Mar
16 Apr
6-8 wk
19 Apr
28 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
30 Mar – 13 Apr
24 May
2-4 wk
27 Apr
7 Jun
3 wk after
14 May
28 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Feb – 11 Mar
25 Jun
4-6 wk
8 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Mar
27 Jun
3-4 wk
8 Apr
18 Jul
0 wk
1 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
2 – 16 Apr
30 Apr
4-6 wk
14 May
28 May
5 wk after
Lemon balm
Melissa officinalis
28 Jan – 11 Feb
23 May
8-10 wk
8 Apr
18 Jul
0 wk
29 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
1 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
11 – 25 Feb
6 Jun
6-8 wk
8 Apr
18 Jul
0 wk
1 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
14 Jan – 11 Feb
23 May
8-12 wk
8 Apr
18 Jul
0 wk
29 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
8 Apr
17 Aug
0 wk
18 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
3 – 17 Feb
8 May
8-10 wk
14 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
28 Jan – 11 Feb
13 May
8-10 wk
8 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Feb
27 May
6-8 wk
8 Apr
8 Jul
0 wk
29 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
11 – 25 Feb
27 May
6-8 wk
8 Apr
8 Jul
0 wk
1 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
6 Jan – 3 Feb
9 Apr
10-14 wk
14 Apr
18 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
16 – 23 Apr
7 May
3-4 wk
14 May
28 May
5 wk after
Cornflower
Centaurea cyanus
8 Apr
18 Jul
0 wk
1 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
16 Feb – 2 Mar
21 Apr
8-10 wk
27 Apr
16 Jun
3 wk after
Sweet William
Dianthus barbatus
11 – 25 Feb
6-8 wk
8 Apr
0 wk
13 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
2 – 16 Mar
5 May
6-8 wk
27 Apr
16 Jun
3 wk after
16 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
25 Feb – 11 Mar
7 May
6-8 wk
22 Apr
18 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Mar – 1 Apr
21 May
4-8 wk
29 Apr
18 Jun
3 wk after
29 Apr
8 Jun
3 wk after
Foxglove
Digitalis purpurea
28 Jan – 11 Feb
8-10 wk
8 Apr
0 wk
18 Apr
1 wk after
Busy lizzie
Impatiens walleriana
19 Feb – 19 Mar
14 Jun
8-12 wk
14 May
9 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
2 – 16 Mar
15 May
6-8 wk
27 Apr
26 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
16 – 30 Mar
27 Apr
4-6 wk
27 Apr
25 May
3 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Feb
23 Apr
8-10 wk
14 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
8 Apr
3 Jul
0 wk
1 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
2 – 16 Mar
25 Apr
6-8 wk
27 Apr
6 Jun
3 wk after
16 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
20 Jan – 17 Feb
23 Apr
8-12 wk
14 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
2 Feb – 2 Mar
24 Mar
8-12 wk
27 Apr
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
2 Feb – 2 Mar
19 Apr
8-12 wk
27 Apr
14 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
2 – 16 Mar
3 May
6-8 wk
27 Apr
14 Jun
3 wk after
Corn poppy
Papaver rhoeas
8 Apr
18 Jul
0 wk
1 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
14 Jan – 11 Feb
13 May
8-12 wk
8 Apr
8 Jul
0 wk
13 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
5 – 19 Mar
1 May
8-10 wk
14 May
26 Jun
5 wk after
Sweet pea
Lathyrus odoratus
11 Feb – 4 Mar
3 Jun
5-8 wk
8 Apr
8 Jul
0 wk
Stock
Matthiola incana
11 – 25 Feb
6 Jun
6-8 wk
8 Apr
18 Jul
0 wk
18 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
11 – 25 Feb
7 May
6-8 wk
8 Apr
18 Jun
0 wk
18 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
16 – 30 Mar
12 May
4-6 wk
27 Apr
9 Jun
3 wk after
Garden pansy
Viola × wittrockiana
28 Jan – 11 Feb
23 May
8-10 wk
8 Apr
18 Jul
0 wk
13 Apr
8 Jul
1 wk after
Petunia
Petunia
2 Feb – 2 Mar
21 Apr
8-12 wk
27 Apr
16 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
17 Feb – 3 Mar
7 May
6-8 wk
14 Apr
18 Jun
1 wk after
14 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
16 – 30 Mar
27 May
4-6 wk
27 Apr
24 Jun
3 wk after
Common morning glory
Ipomoea purpurea
9 – 23 Apr
7 May
3-5 wk
14 May
28 May
5 wk after
Garden cosmos
Cosmos bipinnatus
16 – 30 Mar
21 May
4-6 wk
27 Apr
18 Jun
3 wk after
14 May
8 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
3 – 31 Mar
22 Apr
8-12 wk
26 May
17 Jun
7 wk after
Bee balm
Monarda didyma
14 Jan – 11 Feb
23 Apr
8-12 wk
8 Apr
18 Jun
0 wk
29 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
11 – 25 Feb
7 Apr
6-8 wk
8 Apr
19 May
0 wk
18 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
8 Apr
18 Jun
0 wk
1 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Feb
27 May
6-8 wk
8 Apr
8 Jul
0 wk
28 Feb
28 Jun
6 wk before
Bishop's flower
Ammi majus
25 Feb – 11 Mar
10 Jun
4-6 wk
8 Apr
8 Jul
0 wk
18 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
19 Feb – 5 Mar
16 Mar
10-12 wk
14 May
25 May
5 wk after
Sunflower
Helianthus annuus
30 Mar – 6 Apr
17 Jun
3-4 wk
27 Apr
8 Jul
3 wk after
29 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
2 – 16 Mar
6 Jun
6-8 wk
27 Apr
18 Jul
3 wk after
14 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
22 Feb – 8 Mar
15 May
6-8 wk
19 Apr
26 Jun
2 wk after
14 May
16 Jun
5 wk after
Hollyhock
Alcea rosea
11 – 25 Feb
6-8 wk
8 Apr
0 wk
18 Apr
1 wk after
Alpine delphinium
Delphinium elatum
14 Jan – 11 Feb
23 Apr
8-12 wk
8 Apr
18 Jun
0 wk
29 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
2 – 16 Mar
15 May
6-8 wk
27 Apr
26 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
17 Feb – 3 Mar
27 May
6-8 wk
14 Apr
8 Jul
1 wk after
14 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
28 Jan – 11 Feb
13 Apr
8-10 wk
8 Apr
8 Jun
0 wk
29 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
5 Mar – 2 Apr
16 Apr
6-10 wk
14 May
28 May
5 wk after
California goldenpoppy
Eschscholzia californica
8 Apr
18 Jul
0 wk
1 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
16 Feb – 2 Mar
13 May
8-10 wk
27 Apr
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Feb
7 May
6-8 wk
8 Apr
18 Jun
0 wk
18 Apr
8 Jun
1 wk after