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Rel. frost
Last spring frost (0°C) 2 May Frost 9 of 10 years · 20 years of data
Frost-free season 139 days 2 May – 18 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)
14 – 28 Mar
21 Jun
5-7 wk
2 May
26 Jul
0 wk
26 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
21 Mar – 4 Apr
3 Jul
4-6 wk
2 May
31 Jul
0 wk
26 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Mar
16 Jun
5-7 wk
2 May
21 Jul
0 wk
19 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
2 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 May
26 May
4-5 wk
7 Jun
23 Jun
5 wk after
12 Jun
13 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 May
3-4 wk
17 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Feb – 7 Mar
1 Apr
8-12 wk
2 May
27 May
0 wk
15 May
17 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Apr
16 Jun
1 wk before
26 Apr
6 Jun
1 wk before
Maize
Zea mays
Season too short
4 – 11 Apr
3-4 wk
2 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
11 – 18 Apr
30 Jun
3-4 wk
9 May
21 Jul
1 wk after
15 May
11 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
2 May
11 Jul
0 wk
19 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Mar
16 Jun
5-7 wk
2 May
21 Jul
0 wk
19 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
26 Mar – 9 Apr
2 Jun
4-6 wk
7 May
30 Jun
1 wk after
7 May
20 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Mar
26 Jun
5-7 wk
2 May
31 Jul
0 wk
26 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
17 – 24 Apr
20 May
3-4 wk
15 May
10 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
11 – 18 Apr
15 Jun
3-4 wk
9 May
6 Jul
1 wk after
15 May
26 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
21 Mar – 4 Apr
28 Jun
4-6 wk
2 May
26 Jul
0 wk
Lettuce
Lactuca sativa
4 – 11 Apr
15 Jul
3-4 wk
2 May
5 Aug
0 wk
26 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
21 Mar – 4 Apr
28 Jun
4-6 wk
2 May
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
22 Mar – 5 Apr
7 Jun
2-4 wk
19 Apr
21 Jun
2 wk before
19 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 Apr
16 Jun
1 wk before
26 Apr
6 Jun
1 wk before
Spinach
Spinacia oleracea
4 – 11 Apr
30 Jul
3-4 wk
2 May
20 Aug
0 wk
12 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
7 – 21 Mar
6-8 wk
2 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
4 – 18 Apr
22 May
2-4 wk
2 May
5 Jun
0 wk
15 May
26 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
21 Mar – 4 Apr
28 Jun
4-6 wk
2 May
26 Jul
0 wk
Garden pea
Pisum sativum
4 – 11 Apr
30 Jun
3-4 wk
2 May
21 Jul
0 wk
26 Apr
11 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
Greenhouse
3 – 17 Apr
28 Apr
4-6 wk
15 May
26 May
2 wk after
Lemon balm
Melissa officinalis
21 Feb – 7 Mar
26 May
8-10 wk
2 May
21 Jul
0 wk
28 May
11 Jul
4 wk after
Dill
Anethum graveolens
26 Apr
21 Jul
1 wk before
Wild chives
Allium schoenoprasum
7 – 21 Mar
9 Jun
6-8 wk
2 May
21 Jul
0 wk
26 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
7 Feb – 7 Mar
26 May
8-12 wk
2 May
21 Jul
0 wk
28 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
2 May
10 Aug
0 wk
15 May
31 Jul
2 wk after
Garden sage
Salvia officinalis
28 Feb – 14 Mar
11 May
8-10 wk
9 May
6 Jul
1 wk after
Common thyme
Thymus vulgaris
21 Feb – 7 Mar
16 May
8-10 wk
2 May
11 Jul
0 wk
Oregano
Origanum vulgare
7 – 21 Mar
30 May
6-8 wk
2 May
11 Jul
0 wk
28 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
7 – 21 Mar
30 May
6-8 wk
2 May
11 Jul
0 wk
26 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
31 Jan – 28 Feb
30 Mar
10-14 wk
9 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
Greenhouse
17 – 24 Apr
5 May
3-4 wk
15 May
26 May
2 wk after
Cornflower
Centaurea cyanus
2 May
21 Jul
0 wk
26 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
6 – 20 Mar
30 Mar
8-10 wk
15 May
25 May
2 wk after
Sweet William
Dianthus barbatus
7 – 21 Mar
6-8 wk
2 May
0 wk
7 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
20 Mar – 3 Apr
13 Apr
6-8 wk
15 May
25 May
2 wk after
17 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
22 Mar – 5 Apr
4 Apr
6-8 wk
17 May
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
2 – 30 Apr
18 Apr
4-8 wk
28 May
4 wk after
28 May
4 wk after
Foxglove
Digitalis purpurea
21 Feb – 7 Mar
8-10 wk
2 May
0 wk
15 May
2 wk after
Busy lizzie
Impatiens walleriana
15 Mar – 12 Apr
5 Apr
8-12 wk
7 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
29 Mar – 12 Apr
4 Apr
6-8 wk
24 May
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
12 – 26 Apr
4-6 wk
24 May
3 wk after
Chinese lantern
Physalis alkekengi
28 Feb – 14 Mar
16 Apr
8-10 wk
9 May
11 Jun
1 wk after
Love in a mist
Nigella damascena
2 May
6 Jul
0 wk
26 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
20 Mar – 3 Apr
3 Apr
6-8 wk
15 May
15 May
2 wk after
17 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
14 Feb – 14 Mar
16 Apr
8-12 wk
9 May
11 Jun
1 wk after
Cardoon
Cynara cardunculus
1 – 29 Mar
17 Mar
8-12 wk
24 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
20 Feb – 20 Mar
21 Mar
8-12 wk
15 May
16 May
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
20 Mar – 3 Apr
4 Apr
6-8 wk
15 May
16 May
2 wk after
Corn poppy
Papaver rhoeas
2 May
21 Jul
0 wk
26 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
7 Feb – 7 Mar
16 May
8-12 wk
2 May
11 Jul
0 wk
7 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
Fleece
15 – 29 Mar
9 Apr
8-10 wk
24 May
4 Jun
3 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Mar
6 Jun
5-8 wk
2 May
11 Jul
0 wk
Stock
Matthiola incana
7 – 21 Mar
9 Jun
6-8 wk
2 May
21 Jul
0 wk
15 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
7 – 21 Mar
10 May
6-8 wk
2 May
21 Jun
0 wk
15 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
3 – 17 Apr
13 Apr
4-6 wk
15 May
2 wk after
Garden pansy
Viola × wittrockiana
21 Feb – 7 Mar
26 May
8-10 wk
2 May
21 Jul
0 wk
7 May
11 Jul
1 wk after
Petunia
Petunia
Fleece
20 Feb – 20 Mar
30 Mar
8-12 wk
15 May
25 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
14 – 28 Mar
30 Apr
6-8 wk
9 May
11 Jun
1 wk after
12 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
3 – 17 Apr
28 Apr
4-6 wk
15 May
26 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
10 – 24 Apr
5 May
3-5 wk
15 May
26 May
2 wk after
Garden cosmos
Cosmos bipinnatus
12 – 26 Apr
18 Apr
4-6 wk
24 May
3 wk after
12 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
1 – 29 Mar
20 Apr
8-12 wk
24 May
15 Jun
3 wk after
Bee balm
Monarda didyma
7 Feb – 7 Mar
26 Apr
8-12 wk
2 May
21 Jun
0 wk
28 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
7 – 21 Mar
10 Apr
6-8 wk
2 May
22 May
0 wk
15 May
2 wk after
Safflower
Carthamus tinctorius
2 May
21 Jun
0 wk
26 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
7 – 21 Mar
30 May
6-8 wk
2 May
11 Jul
0 wk
17 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
21 Mar – 4 Apr
13 Jun
4-6 wk
2 May
11 Jul
0 wk
15 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
20 Feb – 6 Mar
27 Feb
10-12 wk
15 May
2 wk after
Sunflower
Helianthus annuus
26 Apr – 3 May
7 Jun
3-4 wk
24 May
28 Jun
3 wk after
28 May
18 Jun
4 wk after
China aster
Callistephus chinensis
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
3 wk after
12 Jun
28 Jun
6 wk after
Annual phlox
Phlox drummondii
20 Mar – 3 Apr
4 Apr
6-8 wk
15 May
16 May
2 wk after
12 Jun
6 wk after
Hollyhock
Alcea rosea
7 – 21 Mar
6-8 wk
2 May
0 wk
15 May
2 wk after
Alpine delphinium
Delphinium elatum
7 Feb – 7 Mar
26 Apr
8-12 wk
2 May
21 Jun
0 wk
28 May
11 Jun
4 wk after
African marigold
Tagetes erecta
29 Mar – 12 Apr
4 Apr
6-8 wk
24 May
3 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Mar
17 May
6-8 wk
9 May
28 Jun
1 wk after
12 Jun
18 Jun
6 wk after
Wood sage
Salvia nemorosa
21 Feb – 7 Mar
16 Apr
8-10 wk
2 May
11 Jun
0 wk
28 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
6 Mar – 3 Apr
14 Apr
6-10 wk
15 May
26 May
2 wk after
California goldenpoppy
Eschscholzia californica
2 May
21 Jul
0 wk
26 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
15 – 29 Mar
28 Apr
8-10 wk
24 May
23 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
7 – 21 Mar
10 May
6-8 wk
2 May
21 Jun
0 wk
15 May
11 Jun
2 wk after