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Rel. frost
Last spring frost (0°C) 19 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 167 days 19 Apr – 3 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)
1 – 15 Mar
19 Jun
5-7 wk
19 Apr
24 Jul
0 wk
12 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Mar
1 Jul
4-6 wk
19 Apr
29 Jul
0 wk
12 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
5 Feb – 5 Mar
8-12 wk
30 Apr
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Mar
14 Jun
5-7 wk
19 Apr
19 Jul
0 wk
7 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
2 – 9 Apr
20 May
3-4 wk
30 Apr
10 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
20 – 27 Apr
5 Jun
4-5 wk
25 May
3 Jul
5 wk after
25 May
23 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 May
3-4 wk
1 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Jan – 22 Feb
1 Apr
8-12 wk
19 Apr
27 May
0 wk
29 Apr
17 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 Apr
16 Jun
1 wk before
12 Apr
6 Jun
1 wk before
Maize
Zea mays
Greenhouse
22 – 29 Mar
10 May
3-4 wk
19 Apr
31 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Mar – 4 Apr
8 Jul
3-4 wk
25 Apr
29 Jul
1 wk after
29 Apr
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 Apr
9 Jul
0 wk
7 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Mar
14 Jun
5-7 wk
19 Apr
19 Jul
0 wk
7 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
13 – 27 Mar
29 May
4-6 wk
24 Apr
26 Jun
1 wk after
24 Apr
16 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Mar
24 Jun
5-7 wk
19 Apr
29 Jul
0 wk
12 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
10 – 17 Apr
25 May
3-4 wk
8 May
15 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Mar – 4 Apr
11 Jun
3-4 wk
25 Apr
2 Jul
1 wk after
29 Apr
22 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Mar
26 Jun
4-6 wk
19 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
22 – 29 Mar
13 Jul
3-4 wk
19 Apr
3 Aug
0 wk
12 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Mar
26 Jun
4-6 wk
19 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Mar
3 Jun
2-4 wk
7 Apr
17 Jun
2 wk before
7 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 Apr
16 Jun
1 wk before
12 Apr
6 Jun
1 wk before
Spinach
Spinacia oleracea
22 – 29 Mar
28 Jul
3-4 wk
19 Apr
18 Aug
0 wk
1 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
16 – 30 May
4-6 wk
27 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
22 Feb – 8 Mar
19 Apr
6-8 wk
19 Apr
31 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
2 – 16 Apr
27 May
2-4 wk
30 Apr
10 Jun
2 wk after
10 May
31 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Mar
26 Jun
4-6 wk
19 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
22 – 29 Mar
28 Jun
3-4 wk
19 Apr
19 Jul
0 wk
12 Apr
9 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
27 Mar – 10 Apr
3 May
4-6 wk
8 May
31 May
3 wk after
Lemon balm
Melissa officinalis
8 – 22 Feb
24 May
8-10 wk
19 Apr
19 Jul
0 wk
10 May
9 Jul
3 wk after
Dill
Anethum graveolens
12 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
22 Feb – 8 Mar
7 Jun
6-8 wk
19 Apr
19 Jul
0 wk
12 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
25 Jan – 22 Feb
24 May
8-12 wk
19 Apr
19 Jul
0 wk
10 May
9 Jul
3 wk after
Coriander
Coriandrum sativum
19 Apr
18 Aug
0 wk
29 Apr
8 Aug
1 wk after
Garden sage
Salvia officinalis
14 – 28 Feb
9 May
8-10 wk
25 Apr
4 Jul
1 wk after
Common thyme
Thymus vulgaris
8 – 22 Feb
14 May
8-10 wk
19 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
0 wk
10 May
29 Jun
3 wk after
Parsley
Petroselinum crispum
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
0 wk
12 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
17 Jan – 14 Feb
10 Apr
10-14 wk
25 Apr
19 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
Fleece
10 – 17 Apr
10 May
3-4 wk
8 May
31 May
3 wk after
Cornflower
Centaurea cyanus
19 Apr
19 Jul
0 wk
12 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
27 Feb – 13 Mar
13 Apr
8-10 wk
8 May
8 Jun
3 wk after
Sweet William
Dianthus barbatus
22 Feb – 8 Mar
6-8 wk
19 Apr
0 wk
24 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Mar
27 Apr
6-8 wk
8 May
8 Jun
3 wk after
27 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Mar
1 May
6-8 wk
3 May
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Mar – 12 Apr
15 May
4-8 wk
10 May
12 Jun
3 wk after
10 May
2 Jun
3 wk after
Foxglove
Digitalis purpurea
8 – 22 Feb
8-10 wk
19 Apr
0 wk
29 Apr
1 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Mar
21 May
8-12 wk
25 May
16 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Mar
7 May
6-8 wk
8 May
18 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
27 Mar – 10 Apr
3 Apr
4-6 wk
8 May
3 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Feb
24 Apr
8-10 wk
25 Apr
19 Jun
1 wk after
Love in a mist
Nigella damascena
19 Apr
4 Jul
0 wk
12 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 Mar
17 Apr
6-8 wk
8 May
29 May
3 wk after
27 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
31 Jan – 28 Feb
24 Apr
8-12 wk
25 Apr
19 Jun
1 wk after
Cardoon
Cynara cardunculus
13 Feb – 13 Mar
25 Mar
8-12 wk
8 May
20 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
13 Feb – 13 Mar
26 Mar
8-12 wk
8 May
21 May
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
13 – 27 Mar
9 Apr
6-8 wk
8 May
21 May
3 wk after
Corn poppy
Papaver rhoeas
19 Apr
19 Jul
0 wk
12 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
25 Jan – 22 Feb
14 May
8-12 wk
19 Apr
9 Jul
0 wk
24 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
16 – 30 Mar
23 Apr
8-10 wk
25 May
18 Jun
5 wk after
Sweet pea
Lathyrus odoratus
22 Feb – 15 Mar
4 Jun
5-8 wk
19 Apr
9 Jul
0 wk
Stock
Matthiola incana
22 Feb – 8 Mar
7 Jun
6-8 wk
19 Apr
19 Jul
0 wk
29 Apr
9 Jul
1 wk after
Wormwood
Artemisia absinthium
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
0 wk
29 Apr
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
27 Mar – 10 Apr
18 Apr
4-6 wk
8 May
16 May
3 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Feb
24 May
8-10 wk
19 Apr
19 Jul
0 wk
24 Apr
9 Jul
1 wk after
Petunia
Petunia
13 Feb – 13 Mar
13 Apr
8-12 wk
8 May
8 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Feb – 14 Mar
8 May
6-8 wk
25 Apr
19 Jun
1 wk after
25 May
9 Jun
5 wk after
Common zinnia
Zinnia elegans
27 Mar – 10 Apr
3 May
4-6 wk
8 May
31 May
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
3 – 17 Apr
10 May
3-5 wk
8 May
31 May
3 wk after
Garden cosmos
Cosmos bipinnatus
27 Mar – 10 Apr
15 May
4-6 wk
8 May
12 Jun
3 wk after
25 May
2 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
2 – 30 Mar
25 Apr
8-12 wk
25 May
20 Jun
5 wk after
Bee balm
Monarda didyma
25 Jan – 22 Feb
24 Apr
8-12 wk
19 Apr
19 Jun
0 wk
10 May
9 Jun
3 wk after
Yarrow
Achillea millefolium
22 Feb – 8 Mar
8 Apr
6-8 wk
19 Apr
20 May
0 wk
29 Apr
10 May
1 wk after
Safflower
Carthamus tinctorius
19 Apr
19 Jun
0 wk
12 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
0 wk
11 Mar
29 Jun
6 wk before
Bishop's flower
Ammi majus
8 – 22 Mar
11 Jun
4-6 wk
19 Apr
9 Jul
0 wk
29 Apr
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
13 – 27 Feb
14 Mar
10-12 wk
8 May
23 May
3 wk after
Sunflower
Helianthus annuus
10 – 17 Apr
18 Jun
3-4 wk
8 May
9 Jul
3 wk after
10 May
29 Jun
3 wk after
China aster
Callistephus chinensis
13 – 27 Mar
7 Jun
6-8 wk
8 May
19 Jul
3 wk after
25 May
9 Jul
5 wk after
Annual phlox
Phlox drummondii
5 – 19 Mar
7 May
6-8 wk
30 Apr
18 Jun
2 wk after
25 May
8 Jun
5 wk after
Hollyhock
Alcea rosea
22 Feb – 8 Mar
6-8 wk
19 Apr
0 wk
29 Apr
1 wk after
Alpine delphinium
Delphinium elatum
25 Jan – 22 Feb
24 Apr
8-12 wk
19 Apr
19 Jun
0 wk
10 May
9 Jun
3 wk after
African marigold
Tagetes erecta
13 – 27 Mar
7 May
6-8 wk
8 May
18 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
28 Feb – 14 Mar
28 May
6-8 wk
25 Apr
9 Jul
1 wk after
25 May
29 Jun
5 wk after
Wood sage
Salvia nemorosa
8 – 22 Feb
14 Apr
8-10 wk
19 Apr
9 Jun
0 wk
10 May
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
27 Feb – 27 Mar
19 Apr
6-10 wk
8 May
31 May
3 wk after
California goldenpoppy
Eschscholzia californica
19 Apr
19 Jul
0 wk
12 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
27 Feb – 13 Mar
8 May
8-10 wk
8 May
3 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
0 wk
29 Apr
9 Jun
1 wk after