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Rel. frost
Last spring frost (0°C) 5 May Frost 9 of 10 years · 20 years of data
Frost-free season 137 days 5 May – 19 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)
17 – 31 Mar
12 Jun
5-7 wk
5 May
17 Jul
0 wk
6 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
24 Jun
4-6 wk
5 May
22 Jul
0 wk
6 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Mar
7 Jun
5-7 wk
5 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
1 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 May
19 May
4-5 wk
10 Jun
16 Jun
5 wk after
17 Jun
6 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)
10 Feb – 10 Mar
15 Mar
8-12 wk
5 May
10 May
0 wk
18 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 May
30 May
0 wk
6 May
20 May
0 wk
Maize
Zea mays
Season too short
9 – 16 Apr
3-4 wk
7 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
23 Jun
3-4 wk
10 May
14 Jul
1 wk after
18 May
4 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
2 Jul
0 wk
5 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Mar
7 Jun
5-7 wk
5 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Potato
Solanum tuberosum
3 – 17 Apr
12 May
4-6 wk
15 May
9 Jun
1 wk after
15 May
30 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Mar
17 Jun
5-7 wk
5 May
22 Jul
0 wk
6 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
17 – 24 Apr
24 May
3-4 wk
15 May
14 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Apr
18 May
3-4 wk
10 May
8 Jun
1 wk after
18 May
29 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
19 Jun
4-6 wk
5 May
17 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Apr
6 Jul
3-4 wk
5 May
27 Jul
0 wk
6 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Mar – 7 Apr
19 Jun
4-6 wk
5 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Apr
18 May
2-4 wk
5 May
1 Jun
0 wk
5 May
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
30 May
0 wk
6 May
20 May
0 wk
Spinach
Spinacia oleracea
7 – 14 Apr
21 Jul
3-4 wk
5 May
11 Aug
0 wk
2 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
12 – 26 Mar
14 Mar
6-8 wk
7 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
9 – 23 Apr
26 May
2-4 wk
7 May
9 Jun
0 wk
18 May
30 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
19 Jun
4-6 wk
5 May
17 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Apr
21 Jun
3-4 wk
5 May
12 Jul
0 wk
6 May
2 Jul
0 wk

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
2 May
4-6 wk
15 May
30 May
1 wk after
Lemon balm
Melissa officinalis
24 Feb – 10 Mar
17 May
8-10 wk
5 May
12 Jul
0 wk
30 May
2 Jul
4 wk after
Dill
Anethum graveolens
6 May
14 Jul
0 wk
Wild chives
Allium schoenoprasum
10 – 24 Mar
31 May
6-8 wk
5 May
12 Jul
0 wk
6 May
2 Jul
0 wk
Spearmint
Mentha spicata
10 Feb – 10 Mar
17 May
8-12 wk
5 May
12 Jul
0 wk
30 May
2 Jul
4 wk after
Coriander
Coriandrum sativum
5 May
3 Aug
0 wk
18 May
24 Jul
2 wk after
Garden sage
Salvia officinalis
1 – 15 Mar
2 May
8-10 wk
10 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
24 Feb – 10 Mar
7 May
8-10 wk
5 May
2 Jul
0 wk
Oregano
Origanum vulgare
10 – 24 Mar
21 May
6-8 wk
5 May
2 Jul
0 wk
30 May
22 Jun
4 wk after
Parsley
Petroselinum crispum
10 – 24 Mar
21 May
6-8 wk
5 May
2 Jul
0 wk
6 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
1 Feb – 1 Mar
21 Mar
10-14 wk
10 May
30 May
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
9 May
3-4 wk
15 May
30 May
1 wk after
Cornflower
Centaurea cyanus
5 May
12 Jul
0 wk
6 May
2 Jul
0 wk
Statice
Limonium sinuatum
Fleece
6 – 20 Mar
27 Mar
8-10 wk
15 May
22 May
1 wk after
Sweet William
Dianthus barbatus
10 – 24 Mar
6-8 wk
5 May
0 wk
15 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
20 Mar – 3 Apr
10 Apr
6-8 wk
15 May
22 May
1 wk after
24 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
23 Mar – 6 Apr
8 Apr
6-8 wk
18 May
20 May
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Apr – 2 May
22 Apr
4-8 wk
30 May
4 wk after
30 May
4 wk after
Foxglove
Digitalis purpurea
24 Feb – 10 Mar
8-10 wk
5 May
0 wk
18 May
2 wk after
Busy lizzie
Impatiens walleriana
18 Mar – 15 Apr
15 Apr
8-12 wk
10 Jun
10 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
20 Mar – 3 Apr
20 Apr
6-8 wk
15 May
1 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 Apr
4-6 wk
25 May
3 wk after
Chinese lantern
Physalis alkekengi
1 – 15 Mar
9 Apr
8-10 wk
10 May
4 Jun
1 wk after
Love in a mist
Nigella damascena
5 May
27 Jun
0 wk
6 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
12 – 26 Mar
17 Apr
6-8 wk
7 May
29 May
0 wk
6 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
15 Feb – 15 Mar
9 Apr
8-12 wk
10 May
4 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
20 Feb – 20 Mar
18 Mar
8-12 wk
15 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
20 Feb – 20 Mar
25 Mar
8-12 wk
15 May
20 May
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
20 Mar – 3 Apr
8 Apr
6-8 wk
15 May
20 May
1 wk after
Corn poppy
Papaver rhoeas
5 May
12 Jul
0 wk
6 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
10 Feb – 10 Mar
7 May
8-12 wk
5 May
2 Jul
0 wk
15 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
16 – 30 Mar
6 Apr
8-10 wk
25 May
1 Jun
3 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Mar
28 May
5-8 wk
5 May
2 Jul
0 wk
Stock
Matthiola incana
10 – 24 Mar
31 May
6-8 wk
5 May
12 Jul
0 wk
18 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
10 – 24 Mar
1 May
6-8 wk
5 May
12 Jun
0 wk
18 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
3 – 17 Apr
17 Apr
4-6 wk
15 May
15 May
1 wk after
Garden pansy
Viola × wittrockiana
24 Feb – 10 Mar
17 May
8-10 wk
5 May
12 Jul
0 wk
15 May
2 Jul
1 wk after
Petunia
Petunia
Fleece
20 Feb – 20 Mar
27 Mar
8-12 wk
15 May
22 May
1 wk after
Sweet Scabious
Scabiosa atropurpurea
15 – 29 Mar
23 Apr
6-8 wk
10 May
4 Jun
1 wk after
17 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
3 – 17 Apr
2 May
4-6 wk
15 May
30 May
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
10 – 24 Apr
9 May
3-5 wk
15 May
30 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
3 – 17 Apr
1 May
4-6 wk
15 May
29 May
1 wk after
30 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
2 – 30 Mar
24 Apr
8-12 wk
25 May
19 Jun
3 wk after
Bee balm
Monarda didyma
10 Feb – 10 Mar
17 Apr
8-12 wk
5 May
12 Jun
0 wk
30 May
2 Jun
4 wk after
Yarrow
Achillea millefolium
10 – 24 Mar
1 Apr
6-8 wk
5 May
13 May
0 wk
18 May
2 wk after
Safflower
Carthamus tinctorius
5 May
12 Jun
0 wk
6 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
10 – 24 Mar
21 May
6-8 wk
5 May
2 Jul
0 wk
19 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
4 Jun
4-6 wk
5 May
2 Jul
0 wk
18 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
20 Feb – 6 Mar
28 Feb
10-12 wk
15 May
1 wk after
Sunflower
Helianthus annuus
27 Apr – 4 May
29 May
3-4 wk
25 May
19 Jun
3 wk after
30 May
9 Jun
4 wk after
China aster
Callistephus chinensis
30 Mar – 13 Apr
18 May
6-8 wk
25 May
29 Jun
3 wk after
17 Jun
19 Jun
6 wk after
Annual phlox
Phlox drummondii
20 Mar – 3 Apr
9 Apr
6-8 wk
15 May
21 May
1 wk after
17 Jun
6 wk after
Hollyhock
Alcea rosea
10 – 24 Mar
6-8 wk
5 May
0 wk
18 May
2 wk after
Alpine delphinium
Delphinium elatum
10 Feb – 10 Mar
17 Apr
8-12 wk
5 May
12 Jun
0 wk
30 May
2 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
20 Mar – 3 Apr
20 Apr
6-8 wk
15 May
1 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
15 – 29 Mar
8 May
6-8 wk
10 May
19 Jun
1 wk after
17 Jun
6 wk after
Wood sage
Salvia nemorosa
24 Feb – 10 Mar
7 Apr
8-10 wk
5 May
2 Jun
0 wk
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
6 Mar – 3 Apr
18 Apr
6-10 wk
15 May
30 May
1 wk after
California goldenpoppy
Eschscholzia californica
5 May
12 Jul
0 wk
6 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
16 – 30 Mar
21 Apr
8-10 wk
25 May
16 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Mar
1 May
6-8 wk
5 May
12 Jun
0 wk
18 May
2 Jun
2 wk after