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