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Rel. frost
Last spring frost (0°C) 3 May Frost 9 of 10 years · 20 years of data
Frost-free season 137 days 3 May – 17 Sep
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

Custom date
Note: This location has a shorter growing season. Plants marked with Fleece, Greenhouse or Season too short need extra protection or are difficult to grow here.

Vegetables

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