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Method
Rel. frost
Last spring frost (0°C) 22 May Normal year · 20 years of data
Frost-free season 119 days 22 May – 18 Sep
Probability that frost is over

50% = 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)
3 – 17 Apr
14 Jun
5-7 wk
22 May
19 Jul
0 wk
26 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Apr
26 Jun
4-6 wk
22 May
24 Jul
0 wk
26 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
14 Mar – 11 Apr
1 Apr
8-12 wk
6 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Apr
9 Jun
5-7 wk
22 May
14 Jul
0 wk
22 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
21 – 28 May
26 May
3-4 wk
18 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
30 May – 6 Jun
4-5 wk
4 Jul
6 wk after
10 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
11 – 18 Jun
3-4 wk
9 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
27 Feb – 27 Mar
21 Mar
8-12 wk
22 May
0 wk
12 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
5 Jun
1 wk after
26 May
26 May
1 wk after
Maize
Zea mays
Fleece
9 – 16 May
16 May
3-4 wk
6 Jun
6 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
3 Jul
3-4 wk
30 May
24 Jul
1 wk after
12 Jun
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 May
4 Jul
0 wk
22 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Apr
9 Jun
5-7 wk
22 May
14 Jul
0 wk
22 May
4 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
19 May
4-6 wk
7 Jun
16 Jun
2 wk after
7 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Apr
19 Jun
5-7 wk
22 May
24 Jul
0 wk
26 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
24 May
3-4 wk
30 May
14 Jun
1 wk after
12 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Apr
21 Jun
4-6 wk
22 May
19 Jul
0 wk
Lettuce
Lactuca sativa
24 Apr – 1 May
8 Jul
3-4 wk
22 May
29 Jul
0 wk
26 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Apr
21 Jun
4-6 wk
22 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Apr – 8 May
26 May
2-4 wk
22 May
9 Jun
0 wk
22 May
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
5 Jun
1 wk after
26 May
26 May
1 wk after
Spinach
Spinacia oleracea
24 Apr – 1 May
23 Jul
3-4 wk
22 May
13 Aug
0 wk
18 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
23 Jun – 7 Jul
4-6 wk
4 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
11 – 25 Apr
25 Apr
6-8 wk
6 Jun
6 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
21 May – 4 Jun
2 Jun
2-4 wk
18 Jun
4 wk after
10 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Apr
21 Jun
4-6 wk
22 May
19 Jul
0 wk
Garden pea
Pisum sativum
24 Apr – 1 May
23 Jun
3-4 wk
22 May
14 Jul
0 wk
26 May
4 Jul
1 wk after

Herbs

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