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Method
Rel. frost
Last spring frost (0°C) 9 May Frost 3 of 4 years · 20 years of data
Frost-free season 139 days 9 May – 25 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)
21 Mar – 4 Apr
15 Jun
5-7 wk
9 May
20 Jul
0 wk
13 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
27 Jun
4-6 wk
9 May
25 Jul
0 wk
13 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
24 Feb – 24 Mar
4 Apr
8-12 wk
19 May
30 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
21 Mar – 4 Apr
10 Jun
5-7 wk
9 May
15 Jul
0 wk
9 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
1 – 8 May
29 May
3-4 wk
29 May
19 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
10 – 17 May
26 May
4-5 wk
14 Jun
23 Jun
5 wk after
27 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Feb – 14 Mar
28 Mar
8-12 wk
9 May
23 May
0 wk
30 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
12 Jun
1 wk after
13 May
2 Jun
1 wk after
Maize
Zea mays
1 – 8 May
6 May
3-4 wk
29 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
4 Jul
3-4 wk
14 May
25 Jul
1 wk after
30 May
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 May
5 Jul
0 wk
9 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
21 Mar – 4 Apr
10 Jun
5-7 wk
9 May
15 Jul
0 wk
9 May
5 Jul
0 wk
Potato
Solanum tuberosum
13 – 27 Apr
22 May
4-6 wk
25 May
19 Jun
2 wk after
25 May
9 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Mar – 4 Apr
20 Jun
5-7 wk
9 May
25 Jul
0 wk
13 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
17 – 24 May
3 Jun
3-4 wk
14 Jun
24 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Apr
2 Jun
3-4 wk
14 May
23 Jun
1 wk after
30 May
13 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
22 Jun
4-6 wk
9 May
20 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Apr
9 Jul
3-4 wk
9 May
30 Jul
0 wk
13 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
22 Jun
4-6 wk
9 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Apr
31 May
2-4 wk
9 May
14 Jun
0 wk
9 May
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
12 Jun
1 wk after
13 May
2 Jun
1 wk after
Spinach
Spinacia oleracea
11 – 18 Apr
24 Jul
3-4 wk
9 May
14 Aug
0 wk
5 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
10 – 24 Jun
4-6 wk
22 Jul
11 wk after
Garden tomato
Solanum lycopersicum
3 – 17 Apr
15 Apr
6-8 wk
29 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
1 – 15 May
5 Jun
2-4 wk
29 May
19 Jun
3 wk after
27 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
22 Jun
4-6 wk
9 May
20 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Apr
24 Jun
3-4 wk
9 May
15 Jul
0 wk
13 May
5 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
17 Apr – 1 May
29 May
4-6 wk
29 May
26 Jun
3 wk after
Lemon balm
Melissa officinalis
28 Feb – 14 Mar
20 May
8-10 wk
9 May
15 Jul
0 wk
13 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
13 May
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
14 – 28 Mar
3 Jun
6-8 wk
9 May
15 Jul
0 wk
13 May
5 Jul
1 wk after
Spearmint
Mentha spicata
14 Feb – 14 Mar
20 May
8-12 wk
9 May
15 Jul
0 wk
13 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
9 May
14 Aug
0 wk
30 May
4 Aug
3 wk after
Garden sage
Salvia officinalis
5 – 19 Mar
5 May
8-10 wk
14 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
28 Feb – 14 Mar
10 May
8-10 wk
9 May
5 Jul
0 wk
Oregano
Origanum vulgare
14 – 28 Mar
24 May
6-8 wk
9 May
5 Jul
0 wk
13 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
14 – 28 Mar
24 May
6-8 wk
9 May
5 Jul
0 wk
13 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
1 Apr
10-14 wk
14 May
10 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
1 – 8 May
5 Jun
3-4 wk
29 May
26 Jun
3 wk after
Cornflower
Centaurea cyanus
9 May
15 Jul
0 wk
13 May
5 Jul
1 wk after
Statice
Limonium sinuatum
20 Mar – 3 Apr
25 Apr
8-10 wk
29 May
20 Jun
3 wk after
Sweet William
Dianthus barbatus
14 – 28 Mar
6-8 wk
9 May
0 wk
25 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
3 wk after
22 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
27 Mar – 10 Apr
12 May
6-8 wk
22 May
23 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
18 Apr – 16 May
26 May
4-8 wk
13 Jun
23 Jun
5 wk after
13 Jun
13 Jun
5 wk after
Foxglove
Digitalis purpurea
28 Feb – 14 Mar
8-10 wk
9 May
0 wk
30 May
3 wk after
Busy lizzie
Impatiens walleriana
22 Mar – 19 Apr
16 Jun
8-12 wk
14 Jun
11 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
3 – 17 Apr
19 May
6-8 wk
29 May
30 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
17 Apr – 1 May
29 Apr
4-6 wk
29 May
3 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
20 Apr
8-10 wk
14 May
15 Jun
1 wk after
Love in a mist
Nigella damascena
9 May
30 Jun
0 wk
13 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
3 – 17 Apr
29 Apr
6-8 wk
29 May
10 Jun
3 wk after
22 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
19 Feb – 19 Mar
20 Apr
8-12 wk
14 May
15 Jun
1 wk after
Cardoon
Cynara cardunculus
6 Mar – 3 Apr
21 Mar
8-12 wk
29 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
6 Mar – 3 Apr
21 Apr
8-12 wk
29 May
16 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
3 – 17 Apr
5 May
6-8 wk
29 May
16 Jun
3 wk after
Corn poppy
Papaver rhoeas
9 May
15 Jul
0 wk
13 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
10 May
8-12 wk
9 May
5 Jul
0 wk
25 May
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
5 – 19 Apr
5 May
8-10 wk
14 Jun
30 Jun
5 wk after
Sweet pea
Lathyrus odoratus
14 Mar – 4 Apr
31 May
5-8 wk
9 May
5 Jul
0 wk
Stock
Matthiola incana
14 – 28 Mar
3 Jun
6-8 wk
9 May
15 Jul
0 wk
30 May
5 Jul
3 wk after
Wormwood
Artemisia absinthium
14 – 28 Mar
4 May
6-8 wk
9 May
15 Jun
0 wk
30 May
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
17 Apr – 1 May
14 May
4-6 wk
29 May
11 Jun
3 wk after
Garden pansy
Viola × wittrockiana
28 Feb – 14 Mar
20 May
8-10 wk
9 May
15 Jul
0 wk
25 May
5 Jul
2 wk after
Petunia
Petunia
6 Mar – 3 Apr
25 Apr
8-12 wk
29 May
20 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
4 May
6-8 wk
14 May
15 Jun
1 wk after
27 Jun
7 wk after
Common zinnia
Zinnia elegans
17 Apr – 1 May
29 May
4-6 wk
29 May
26 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
24 Apr – 8 May
5 Jun
3-5 wk
29 May
26 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
17 Apr – 1 May
26 May
4-6 wk
29 May
23 Jun
3 wk after
27 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
22 Mar – 19 Apr
21 May
8-12 wk
14 Jun
16 Jul
5 wk after
Bee balm
Monarda didyma
14 Feb – 14 Mar
20 Apr
8-12 wk
9 May
15 Jun
0 wk
13 Jun
5 wk after
Yarrow
Achillea millefolium
14 – 28 Mar
4 Apr
6-8 wk
9 May
16 May
0 wk
30 May
3 wk after
Safflower
Carthamus tinctorius
9 May
15 Jun
0 wk
13 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
14 – 28 Mar
24 May
6-8 wk
9 May
5 Jul
0 wk
21 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
28 Mar – 11 Apr
7 Jun
4-6 wk
9 May
5 Jul
0 wk
30 May
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
6 – 20 Mar
25 Mar
10-12 wk
29 May
3 Jun
3 wk after
Sunflower
Helianthus annuus
1 – 8 May
9 Jun
3-4 wk
29 May
30 Jun
3 wk after
13 Jun
20 Jun
5 wk after
China aster
Callistephus chinensis
3 – 17 Apr
29 May
6-8 wk
29 May
10 Jul
3 wk after
27 Jun
30 Jun
7 wk after
Annual phlox
Phlox drummondii
24 Mar – 7 Apr
19 May
6-8 wk
19 May
30 Jun
1 wk after
27 Jun
7 wk after
Hollyhock
Alcea rosea
14 – 28 Mar
6-8 wk
9 May
0 wk
30 May
3 wk after
Alpine delphinium
Delphinium elatum
14 Feb – 14 Mar
20 Apr
8-12 wk
9 May
15 Jun
0 wk
13 Jun
5 wk after
African marigold
Tagetes erecta
3 – 17 Apr
19 May
6-8 wk
29 May
30 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
19 May
6-8 wk
14 May
30 Jun
1 wk after
27 Jun
7 wk after
Wood sage
Salvia nemorosa
28 Feb – 14 Mar
10 Apr
8-10 wk
9 May
5 Jun
0 wk
13 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
20 Mar – 17 Apr
15 May
6-10 wk
29 May
26 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
9 May
15 Jul
0 wk
13 May
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
20 Mar – 3 Apr
28 Apr
8-10 wk
29 May
23 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Mar
4 May
6-8 wk
9 May
15 Jun
0 wk
30 May
5 Jun
3 wk after