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Method
Rel. frost
Last spring frost (0°C) 25 May Normal year · 20 years of data
Frost-free season 108 days 25 May – 10 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)
6 – 20 Apr
12 Jun
5-7 wk
25 May
17 Jul
0 wk
26 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
24 Jun
4-6 wk
25 May
22 Jul
0 wk
26 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
8 Mar – 5 Apr
24 Mar
8-12 wk
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
7 Jun
5-7 wk
25 May
12 Jul
0 wk
25 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
10 – 17 May
18 May
3-4 wk
7 Jun
8 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
3 – 10 May
31 May
4-5 wk
7 Jun
28 Jun
2 wk after
19 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
5 – 12 Jun
3-4 wk
3 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
2 – 30 Mar
22 Mar
8-12 wk
25 May
0 wk
31 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
28 May
0 wk
26 May
0 wk
Maize
Zea mays
Greenhouse
27 Apr – 4 May
21 May
3-4 wk
25 May
11 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
27 Jun
3-4 wk
27 May
18 Jul
0 wk
7 Jun
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
2 Jul
0 wk
25 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
7 Jun
5-7 wk
25 May
12 Jul
0 wk
25 May
2 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
12 May
4-6 wk
4 Jun
9 Jun
1 wk after
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
17 Jun
5-7 wk
25 May
22 Jul
0 wk
26 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
10 – 17 May
5 Jun
3-4 wk
7 Jun
26 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Apr – 6 May
18 May
3-4 wk
27 May
8 Jun
0 wk
7 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
19 Jun
4-6 wk
25 May
17 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
6 Jul
3-4 wk
25 May
27 Jul
0 wk
26 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
19 Jun
4-6 wk
25 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Apr – 11 May
20 May
2-4 wk
25 May
3 Jun
0 wk
25 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
28 May
0 wk
26 May
0 wk
Spinach
Spinacia oleracea
27 Apr – 4 May
21 Jul
3-4 wk
25 May
11 Aug
0 wk
22 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 May
25 May
2-4 wk
7 Jun
8 Jun
2 wk after
7 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
19 Jun
4-6 wk
25 May
17 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
21 Jun
3-4 wk
25 May
12 Jul
0 wk
26 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
Fleece
26 Apr – 10 May
14 May
4-6 wk
7 Jun
11 Jun
2 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
17 May
8-10 wk
25 May
12 Jul
0 wk
19 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
26 May
18 Jul
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
31 May
6-8 wk
25 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
17 May
8-12 wk
25 May
12 Jul
0 wk
19 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
25 May
7 Aug
0 wk
7 Jun
28 Jul
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
2 May
8-10 wk
27 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
16 – 30 Mar
7 May
8-10 wk
25 May
2 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
21 May
6-8 wk
25 May
2 Jul
0 wk
19 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
21 May
6-8 wk
25 May
2 Jul
0 wk
26 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
18 Feb – 18 Mar
27 Mar
10-14 wk
27 May
5 Jun
0 wk

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