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Rel. frost
Last spring frost (0°C) 13 May Frost 1 of 10 years · 20 years of data
Frost-free season 179 days 13 May – 8 Nov
Probability that frost is over

90% = 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)
25 Mar – 8 Apr
8 Jun
5-7 wk
13 May
13 Jul
0 wk
14 May
3 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
20 Jun
4-6 wk
13 May
18 Jul
0 wk
14 May
8 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
3 Jun
5-7 wk
13 May
8 Jul
0 wk
13 May
28 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
25 Apr – 2 May
2 Jun
3-4 wk
23 May
23 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
31 May
4-5 wk
18 Jun
28 Jun
5 wk after
25 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
24 Mar
8-12 wk
13 May
19 May
0 wk
26 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 May
8 Jun
0 wk
14 May
29 May
0 wk
Maize
Zea mays
Greenhouse
17 – 24 Apr
23 May
3-4 wk
15 May
13 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
27 Jun
3-4 wk
18 May
18 Jul
1 wk after
26 May
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
28 Jun
0 wk
13 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
3 Jun
5-7 wk
13 May
8 Jul
0 wk
13 May
28 Jun
0 wk
Potato
Solanum tuberosum
11 – 25 Apr
20 May
4-6 wk
23 May
17 Jun
1 wk after
23 May
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
13 Jun
5-7 wk
13 May
18 Jul
0 wk
14 May
8 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
5 – 12 May
7 Jun
3-4 wk
2 Jun
28 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
16 May
3-4 wk
18 May
6 Jun
1 wk after
26 May
27 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
15 Jun
4-6 wk
13 May
13 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
2 Jul
3-4 wk
13 May
23 Jul
0 wk
14 May
13 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
15 Jun
4-6 wk
13 May
13 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Apr
25 May
2-4 wk
13 May
8 Jun
0 wk
13 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 May
8 Jun
0 wk
14 May
29 May
0 wk
Spinach
Spinacia oleracea
15 – 22 Apr
17 Jul
3-4 wk
13 May
7 Aug
0 wk
10 May
28 Jul
0 wk
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
20 Mar – 3 Apr
2 May
6-8 wk
15 May
13 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
25 Apr – 9 May
9 Jun
2-4 wk
23 May
23 Jun
1 wk after
7 Jun
13 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
15 Jun
4-6 wk
13 May
13 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
17 Jun
3-4 wk
13 May
8 Jul
0 wk
14 May
28 Jun
0 wk

Herbs

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