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