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Rel. frost
Last spring frost (0°C) 14 May Frost 1 of 10 years · 20 years of data
Frost-free season 160 days 14 May – 21 Oct
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)
24 Apr – 8 May
19 Jun
5-7 wk
12 Jun
24 Jul
4 wk after
7 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
1 Jul
4-6 wk
28 May
29 Jul
2 wk after
7 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
26 Mar – 23 Apr
1 Apr
8-12 wk
18 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Mar
14 Jun
5-7 wk
19 Apr
19 Jul
4 wk before
2 May
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
2 – 9 Jun
3-4 wk
30 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 Jun
11 Jun
4-5 wk
8 Jul
9 Jul
8 wk after
19 Jun
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
12 – 19 Jun
3-4 wk
10 Jul
8 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Feb – 19 Mar
4 Apr
8-12 wk
14 May
30 May
Vid frost
24 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
7 May
19 Jun
1 wk before
7 May
9 Jun
1 wk before
Maize
Zea mays
Fleece
21 – 28 May
3-4 wk
18 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 May
8 Jul
3-4 wk
12 Jun
29 Jul
4 wk after
24 May
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
2 May
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Mar
14 Jun
5-7 wk
19 Apr
19 Jul
4 wk before
2 May
9 Jul
2 wk before
Potato
Solanum tuberosum
7 – 21 Apr
11 Jun
4-6 wk
19 May
9 Jul
1 wk after
19 May
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Mar
24 Jun
5-7 wk
19 Apr
29 Jul
4 wk before
7 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
10 – 17 Jun
3-4 wk
8 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 May
1 Jul
3-4 wk
12 Jun
22 Jul
4 wk after
24 May
12 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
26 Jun
4-6 wk
28 May
24 Jul
2 wk after
Lettuce
Lactuca sativa
9 – 16 Apr
13 Jul
3-4 wk
7 May
3 Aug
1 wk before
7 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
26 Jun
4-6 wk
7 May
24 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Apr
5 Jun
2-4 wk
2 May
19 Jun
2 wk before
2 May
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
7 May
19 Jun
1 wk before
7 May
9 Jun
1 wk before
Spinach
Spinacia oleracea
1 – 8 Apr
28 Jul
3-4 wk
29 Apr
18 Aug
2 wk before
26 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
10 – 24 Jun
4-6 wk
22 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
23 Apr – 7 May
25 Apr
6-8 wk
18 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 Jun
2 Jun
2-4 wk
30 Jun
7 wk after
19 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
26 Jun
4-6 wk
28 May
24 Jul
2 wk after
Garden pea
Pisum sativum
1 – 8 Apr
28 Jun
3-4 wk
29 Apr
19 Jul
2 wk before
7 May
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
19 May – 2 Jun
24 May
4-6 wk
30 Jun
7 wk after
Lemon balm
Melissa officinalis
5 – 19 Mar
24 May
8-10 wk
14 May
19 Jul
Vid frost
4 Jun
9 Jul
3 wk after
Dill
Anethum graveolens
7 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
22 Feb – 8 Mar
7 Jun
6-8 wk
19 Apr
19 Jul
4 wk before
7 May
9 Jul
1 wk before
Spearmint
Mentha spicata
4 Feb – 4 Mar
24 May
8-12 wk
29 Apr
19 Jul
2 wk before
4 Jun
9 Jul
3 wk after
Coriander
Coriandrum sativum
24 May
8 Aug
1 wk after
Garden sage
Salvia officinalis
3 – 17 Apr
9 May
8-10 wk
12 Jun
4 Jul
4 wk after
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
14 May
8-10 wk
28 May
9 Jul
2 wk after
Oregano
Origanum vulgare
25 Mar – 8 Apr
28 May
6-8 wk
20 May
9 Jul
1 wk after
4 Jun
29 Jun
3 wk after
Parsley
Petroselinum crispum
4 – 18 Mar
28 May
6-8 wk
29 Apr
9 Jul
2 wk before
7 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
6 Mar – 3 Apr
10 Apr
10-14 wk
12 Jun
19 Jun
4 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
2 – 9 Jun
3-4 wk
30 Jun
7 wk after
Cornflower
Centaurea cyanus
29 Apr
19 Jul
2 wk before
7 May
9 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
9 – 23 Apr
7 May
8-10 wk
18 Jun
2 Jul
5 wk after
Sweet William
Dianthus barbatus
4 – 18 Mar
6-8 wk
29 Apr
2 wk before
19 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
23 Apr – 7 May
21 May
6-8 wk
18 Jun
2 Jul
5 wk after
29 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
29 Apr – 13 May
18 May
6-8 wk
24 Jun
29 Jun
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
9 Apr – 7 May
1 Jun
4-8 wk
4 Jun
29 Jun
3 wk after
4 Jun
19 Jun
3 wk after
Foxglove
Digitalis purpurea
18 Feb – 4 Mar
8-10 wk
29 Apr
2 wk before
24 May
1 wk after
Busy lizzie
Impatiens walleriana
15 Apr – 13 May
11 Jun
8-12 wk
8 Jul
6 Aug
8 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 May
12 May
6-8 wk
30 Jun
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 May – 2 Jun
4-6 wk
30 Jun
7 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Apr
24 Apr
8-10 wk
12 Jun
19 Jun
4 wk after
Love in a mist
Nigella damascena
7 May
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
23 Apr – 7 May
11 May
6-8 wk
18 Jun
22 Jun
5 wk after
29 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
20 Mar – 17 Apr
24 Apr
8-12 wk
12 Jun
19 Jun
4 wk after
Cardoon
Cynara cardunculus
7 Apr – 5 May
8-12 wk
30 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
26 Mar – 23 Apr
4 May
8-12 wk
18 Jun
29 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
23 Apr – 7 May
18 May
6-8 wk
18 Jun
29 Jun
5 wk after
Corn poppy
Papaver rhoeas
7 May
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
14 May
8-12 wk
7 May
9 Jul
1 wk before
19 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
29 Apr – 13 May
8-10 wk
8 Jul
8 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Mar
4 Jun
5-8 wk
29 Apr
9 Jul
2 wk before
Stock
Matthiola incana
12 – 26 Mar
7 Jun
6-8 wk
7 May
19 Jul
1 wk before
24 May
9 Jul
1 wk after
Wormwood
Artemisia absinthium
4 – 18 Mar
8 May
6-8 wk
29 Apr
19 Jun
2 wk before
24 May
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
7 – 21 May
27 May
4-6 wk
18 Jun
24 Jun
5 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Feb
24 May
8-10 wk
19 Apr
19 Jul
4 wk before
19 May
9 Jul
1 wk after
Petunia
Petunia
Fleece
26 Mar – 23 Apr
7 May
8-12 wk
18 Jun
2 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
17 Apr – 1 May
8 May
6-8 wk
12 Jun
19 Jun
4 wk after
19 Jun
5 wk after
Common zinnia
Zinnia elegans
19 May – 2 Jun
24 May
4-6 wk
30 Jun
7 wk after
Common morning glory
Ipomoea purpurea
Fleece
26 May – 9 Jun
31 May
3-5 wk
30 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
19 May – 2 Jun
1 Jun
4-6 wk
30 Jun
7 wk after
19 Jun
19 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
19 Apr – 17 May
1 May
8-12 wk
12 Jul
8 wk after
Bee balm
Monarda didyma
19 Feb – 19 Mar
24 Apr
8-12 wk
14 May
19 Jun
Vid frost
4 Jun
9 Jun
3 wk after
Yarrow
Achillea millefolium
4 – 18 Mar
8 Apr
6-8 wk
29 Apr
20 May
2 wk before
24 May
1 wk after
Safflower
Carthamus tinctorius
29 Apr
19 Jun
2 wk before
7 May
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
4 wk before
2 May
29 Jun
2 wk before
Bishop's flower
Ammi majus
12 – 26 Apr
11 Jun
4-6 wk
24 May
9 Jul
1 wk after
24 May
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
26 Mar – 9 Apr
5 Apr
10-12 wk
18 Jun
5 wk after
Sunflower
Helianthus annuus
2 – 9 Jun
18 Jun
3-4 wk
30 Jun
9 Jul
7 wk after
4 Jun
29 Jun
3 wk after
China aster
Callistephus chinensis
5 – 19 May
7 Jun
6-8 wk
30 Jun
19 Jul
7 wk after
19 Jun
9 Jul
5 wk after
Annual phlox
Phlox drummondii
23 Apr – 7 May
12 May
6-8 wk
18 Jun
23 Jun
5 wk after
19 Jun
5 wk after
Hollyhock
Alcea rosea
4 – 18 Mar
6-8 wk
29 Apr
2 wk before
24 May
1 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
24 Apr
8-12 wk
28 May
19 Jun
2 wk after
4 Jun
9 Jun
3 wk after
African marigold
Tagetes erecta
5 – 19 May
12 May
6-8 wk
30 Jun
7 wk after
Black-eyed Susan
Rudbeckia hirta
17 Apr – 1 May
28 May
6-8 wk
12 Jun
9 Jul
4 wk after
19 Jun
29 Jun
5 wk after
Wood sage
Salvia nemorosa
11 – 25 Mar
14 Apr
8-10 wk
20 May
9 Jun
1 wk after
4 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
21 Apr – 19 May
10 May
6-10 wk
30 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
7 May
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Apr – 5 May
14 May
8-10 wk
30 Jun
9 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Mar
8 May
6-8 wk
29 Apr
19 Jun
2 wk before
24 May
9 Jun
1 wk after