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Method
Rel. frost
Last spring frost (0°C) 22 May Frost 3 of 4 years · 20 years of data
Frost-free season 109 days 22 May – 8 Sep
Probability that frost is over

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