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Rel. frost
Last spring frost (0°C) 31 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 219 days 31 Mar – 5 Nov
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)
Season too short
10 – 24 Feb
15 Jun
5-7 wk
31 Mar
20 Jul
0 wk
19 Mar
10 Jul
2 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
17 Feb – 3 Mar
27 Jun
4-6 wk
31 Mar
25 Jul
0 wk
19 Mar
15 Jul
2 wk before
Chili pepper
Capsicum annuum
Fleece
13 Feb – 13 Mar
26 Mar
8-12 wk
8 May
21 May
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
10 – 24 Feb
10 Jun
5-7 wk
31 Mar
15 Jul
0 wk
13 Mar
5 Jul
3 wk before
Garden cucumber
Cucumis sativus
22 – 29 Apr
20 May
3-4 wk
20 May
10 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 Apr
7 Jun
4-5 wk
20 May
5 Jul
7 wk after
19 May
25 Jun
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
2 – 9 May
4 Jun
3-4 wk
30 May
25 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
6 Jan – 3 Feb
31 Mar
8-12 wk
31 Mar
26 May
0 wk
21 Apr
16 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 Apr
15 Jun
1 wk after
4 Apr
5 Jun
1 wk after
Maize
Zea mays
10 – 17 Apr
10 May
3-4 wk
8 May
31 May
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Mar
4 Jul
3-4 wk
2 Apr
25 Jul
0 wk
21 Apr
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 Mar
5 Jul
0 wk
31 Mar
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
10 – 24 Feb
10 Jun
5-7 wk
31 Mar
15 Jul
0 wk
13 Mar
5 Jul
3 wk before
Potato
Solanum tuberosum
5 – 19 Mar
25 May
4-6 wk
16 Apr
22 Jun
2 wk after
16 Apr
12 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Feb
20 Jun
5-7 wk
31 Mar
25 Jul
0 wk
4 Apr
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
22 – 29 Apr
23 Jun
3-4 wk
20 May
14 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 Mar
3 Jun
3-4 wk
2 Apr
24 Jun
0 wk
21 Apr
14 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
17 Feb – 3 Mar
22 Jun
4-6 wk
31 Mar
20 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 Mar
9 Jul
3-4 wk
31 Mar
30 Jul
0 wk
4 Apr
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
17 Feb – 3 Mar
22 Jun
4-6 wk
31 Mar
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Mar
1 Jun
2-4 wk
31 Mar
15 Jun
0 wk
31 Mar
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 Apr
15 Jun
1 wk after
4 Apr
5 Jun
1 wk after
Spinach
Spinacia oleracea
3 – 10 Mar
24 Jul
3-4 wk
31 Mar
14 Aug
0 wk
27 Mar
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
2 – 16 May
4-6 wk
13 Jun
11 wk after
Garden tomato
Solanum lycopersicum
13 – 27 Mar
19 Apr
6-8 wk
8 May
31 May
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 Apr
25 Jun
2-4 wk
8 May
9 Jul
5 wk after
19 May
29 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
17 Feb – 3 Mar
22 Jun
4-6 wk
31 Mar
20 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 Mar
24 Jun
3-4 wk
31 Mar
15 Jul
0 wk
4 Apr
5 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
8 – 22 Apr
1 Jun
4-6 wk
20 May
29 Jun
7 wk after
Lemon balm
Melissa officinalis
20 Jan – 3 Feb
20 May
8-10 wk
31 Mar
15 Jul
0 wk
5 May
5 Jul
5 wk after
Dill
Anethum graveolens
4 Apr
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
Season too short
3 – 17 Feb
3 Jun
6-8 wk
31 Mar
15 Jul
0 wk
19 Mar
5 Jul
2 wk before
Spearmint
Mentha spicata
Season too short
6 Jan – 3 Feb
20 May
8-12 wk
31 Mar
15 Jul
0 wk
10 Apr
5 Jul
1 wk after
Coriander
Coriandrum sativum
31 Mar
14 Aug
0 wk
21 Apr
4 Aug
3 wk after
Garden sage
Salvia officinalis
Season too short
20 Jan – 3 Feb
5 May
8-10 wk
31 Mar
30 Jun
0 wk
Common thyme
Thymus vulgaris
Season too short
20 Jan – 3 Feb
10 May
8-10 wk
31 Mar
5 Jul
0 wk
Oregano
Origanum vulgare
Season too short
3 – 17 Feb
24 May
6-8 wk
31 Mar
5 Jul
0 wk
10 Apr
25 Jun
1 wk after
Parsley
Petroselinum crispum
Season too short
3 – 17 Feb
24 May
6-8 wk
31 Mar
5 Jul
0 wk
19 Mar
25 Jun
2 wk before
Rosemary
Salvia rosmarinus
25 Dec – 22 Jan
6 Apr
10-14 wk
2 Apr
15 Jun
0 wk

Annual flowers

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