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Method
Rel. frost
Last spring frost (0°C) 17 May Frost 3 of 4 years · 20 years of data
Frost-free season 106 days 17 May – 31 Aug
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)
29 Mar – 12 Apr
12 Jun
5-7 wk
17 May
17 Jul
0 wk
18 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
24 Jun
4-6 wk
17 May
22 Jul
0 wk
18 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
21 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
7 Jun
5-7 wk
17 May
12 Jul
0 wk
17 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
2 – 9 May
15 May
3-4 wk
30 May
5 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
25 Apr – 2 May
25 May
4-5 wk
30 May
22 Jun
2 wk after
11 Jun
12 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
28 May – 4 Jun
3-4 wk
25 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Feb – 22 Mar
11 Mar
8-12 wk
17 May
0 wk
30 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 May
26 May
0 wk
18 May
0 wk
Maize
Zea mays
Greenhouse
19 – 26 Apr
21 May
3-4 wk
17 May
11 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
21 Jun
3-4 wk
19 May
12 Jul
0 wk
30 May
2 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
28 Jun
0 wk
17 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
7 Jun
5-7 wk
17 May
12 Jul
0 wk
17 May
2 Jul
0 wk
Potato
Solanum tuberosum
15 – 29 Apr
9 May
4-6 wk
27 May
6 Jun
1 wk after
27 May
27 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
13 Jun
5-7 wk
17 May
18 Jul
0 wk
18 May
8 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
2 – 9 May
5 Jun
3-4 wk
30 May
26 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
15 May
3-4 wk
19 May
5 Jun
0 wk
30 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
19 Jun
4-6 wk
17 May
17 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
2 Jul
3-4 wk
17 May
23 Jul
0 wk
18 May
13 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
19 Jun
4-6 wk
17 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
16 May
2-4 wk
17 May
30 May
0 wk
17 May
20 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 May
26 May
0 wk
18 May
0 wk
Spinach
Spinacia oleracea
19 – 26 Apr
21 Jul
3-4 wk
17 May
11 Aug
0 wk
14 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
22 Mar – 5 Apr
30 Apr
6-8 wk
17 May
11 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
22 May
2-4 wk
30 May
5 Jun
2 wk after
29 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
19 Jun
4-6 wk
17 May
17 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
17 Jun
3-4 wk
17 May
8 Jul
0 wk
18 May
28 Jun
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
18 Apr – 2 May
14 May
4-6 wk
30 May
11 Jun
2 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
13 May
8-10 wk
17 May
8 Jul
0 wk
11 Jun
28 Jun
4 wk after
Dill
Anethum graveolens
18 May
12 Jul
0 wk
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
31 May
6-8 wk
17 May
12 Jul
0 wk
18 May
2 Jul
0 wk
Spearmint
Mentha spicata
22 Feb – 22 Mar
17 May
8-12 wk
17 May
12 Jul
0 wk
11 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
17 May
1 Aug
0 wk
30 May
22 Jul
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
2 May
8-10 wk
19 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
7 May
8-10 wk
17 May
2 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
21 May
6-8 wk
17 May
2 Jul
0 wk
11 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
21 May
6-8 wk
17 May
2 Jul
0 wk
18 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
20 Mar
10-14 wk
19 May
29 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
2 – 9 May
21 May
3-4 wk
30 May
11 Jun
2 wk after
Cornflower
Centaurea cyanus
17 May
12 Jul
0 wk
18 May
2 Jul
0 wk
Statice
Limonium sinuatum
21 Mar – 4 Apr
13 Apr
8-10 wk
30 May
8 Jun
2 wk after
Sweet William
Dianthus barbatus
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
27 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
27 Apr
6-8 wk
30 May
8 Jun
2 wk after
23 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Apr
1 May
6-8 wk
28 May
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
16 Apr – 14 May
15 May
4-8 wk
11 Jun
12 Jun
4 wk after
11 Jun
4 wk after
Foxglove
Digitalis purpurea
8 – 22 Mar
8-10 wk
17 May
0 wk
30 May
2 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
1 Jun
8-12 wk
18 Jun
27 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
7 May
6-8 wk
30 May
18 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
4-6 wk
30 May
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
7 Apr
8-10 wk
19 May
2 Jun
0 wk
Love in a mist
Nigella damascena
17 May
23 Jun
0 wk
18 May
13 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
28 Mar – 11 Apr
27 Apr
6-8 wk
23 May
8 Jun
1 wk after
6 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
7 Apr
8-12 wk
19 May
2 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
22 Feb – 22 Mar
18 Mar
8-12 wk
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
28 Feb – 28 Mar
17 Apr
8-12 wk
23 May
12 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
28 Mar – 11 Apr
1 May
6-8 wk
23 May
12 Jun
1 wk after
Corn poppy
Papaver rhoeas
17 May
8 Jul
0 wk
18 May
28 Jun
0 wk
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
3 May
8-12 wk
17 May
28 Jun
0 wk
27 May
18 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
21 Mar – 4 Apr
3 May
8-10 wk
30 May
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
28 May
5-8 wk
17 May
2 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
27 May
6-8 wk
17 May
8 Jul
0 wk
30 May
28 Jun
2 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
1 May
6-8 wk
17 May
12 Jun
0 wk
30 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
11 – 25 Apr
10 May
4-6 wk
23 May
7 Jun
1 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
17 May
8-10 wk
17 May
12 Jul
0 wk
27 May
2 Jul
1 wk after
Petunia
Petunia
7 Mar – 4 Apr
13 Apr
8-12 wk
30 May
8 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
21 Apr
6-8 wk
19 May
2 Jun
0 wk
29 Jun
6 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
14 May
4-6 wk
30 May
11 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
25 Apr – 9 May
21 May
3-5 wk
30 May
11 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
15 May
4-6 wk
30 May
12 Jun
2 wk after
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
26 Mar – 23 Apr
6 May
8-12 wk
18 Jun
1 Jul
5 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
13 Apr
8-12 wk
17 May
8 Jun
0 wk
11 Jun
4 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
1 Apr
6-8 wk
17 May
0 wk
30 May
2 wk after
Safflower
Carthamus tinctorius
17 May
12 Jun
0 wk
18 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
21 May
6-8 wk
17 May
2 Jul
0 wk
1 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
31 May
4-6 wk
17 May
28 Jun
0 wk
30 May
18 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
28 Feb – 14 Mar
26 Mar
10-12 wk
23 May
4 Jun
1 wk after
Sunflower
Helianthus annuus
2 – 9 May
28 May
3-4 wk
30 May
18 Jun
2 wk after
11 Jun
4 wk after
China aster
Callistephus chinensis
4 – 18 Apr
17 May
6-8 wk
30 May
28 Jun
2 wk after
29 Jun
6 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
7 May
6-8 wk
23 May
18 Jun
1 wk after
29 Jun
6 wk after
Hollyhock
Alcea rosea
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
30 May
2 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
13 Apr
8-12 wk
17 May
8 Jun
0 wk
11 Jun
4 wk after
African marigold
Tagetes erecta
4 – 18 Apr
7 May
6-8 wk
30 May
18 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
7 May
6-8 wk
19 May
18 Jun
0 wk
29 Jun
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
3 Apr
8-10 wk
17 May
29 May
0 wk
11 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
21 Mar – 18 Apr
30 Apr
6-10 wk
30 May
11 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
17 May
5 Jul
0 wk
18 May
25 Jun
0 wk
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
13 Apr
8-10 wk
30 May
8 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
1 May
6-8 wk
17 May
12 Jun
0 wk
30 May
2 Jun
2 wk after