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Method
Rel. frost
Last spring frost (0°C) 14 May Frost 3 of 4 years · 20 years of data
Frost-free season 123 days 14 May – 14 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)
26 Mar – 9 Apr
13 Jun
5-7 wk
14 May
18 Jul
0 wk
15 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
2 – 16 Apr
25 Jun
4-6 wk
14 May
23 Jul
0 wk
15 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
2 – 30 Mar
24 Mar
8-12 wk
25 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
26 Mar – 9 Apr
8 Jun
5-7 wk
14 May
13 Jul
0 wk
14 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
6 – 13 May
18 May
3-4 wk
3 Jun
8 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 Apr – 6 May
3 Jun
4-5 wk
3 Jun
1 Jul
3 wk after
8 Jun
21 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Feb – 19 Mar
13 Mar
8-12 wk
14 May
0 wk
27 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
15 May
28 May
0 wk
15 May
18 May
0 wk
Maize
Zea mays
Fleece
27 Apr – 4 May
8 May
3-4 wk
25 May
29 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
30 Jun
3-4 wk
20 May
21 Jul
1 wk after
27 May
11 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 May
3 Jul
0 wk
14 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
26 Mar – 9 Apr
8 Jun
5-7 wk
14 May
13 Jul
0 wk
14 May
3 Jul
0 wk
Potato
Solanum tuberosum
12 – 26 Apr
14 May
4-6 wk
24 May
11 Jun
1 wk after
24 May
1 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
26 Mar – 9 Apr
18 Jun
5-7 wk
14 May
23 Jul
0 wk
15 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
6 – 13 May
12 Jun
3-4 wk
3 Jun
3 Jul
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
17 May
3-4 wk
20 May
7 Jun
1 wk after
27 May
28 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
2 – 16 Apr
20 Jun
4-6 wk
14 May
18 Jul
0 wk
Lettuce
Lactuca sativa
16 – 23 Apr
7 Jul
3-4 wk
14 May
28 Jul
0 wk
15 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
2 – 16 Apr
20 Jun
4-6 wk
14 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
16 – 30 Apr
19 May
2-4 wk
14 May
2 Jun
0 wk
14 May
23 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
15 May
28 May
0 wk
15 May
18 May
0 wk
Spinach
Spinacia oleracea
16 – 23 Apr
22 Jul
3-4 wk
14 May
12 Aug
0 wk
11 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
30 Mar – 13 Apr
17 Apr
6-8 wk
25 May
29 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
25 May
2-4 wk
3 Jun
8 Jun
3 wk after
26 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
2 – 16 Apr
20 Jun
4-6 wk
14 May
18 Jul
0 wk
Garden pea
Pisum sativum
16 – 23 Apr
22 Jun
3-4 wk
14 May
13 Jul
0 wk
15 May
3 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
22 Apr – 6 May
21 May
4-6 wk
3 Jun
18 Jun
3 wk after
Lemon balm
Melissa officinalis
5 – 19 Mar
18 May
8-10 wk
14 May
13 Jul
0 wk
8 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
15 May
21 Jul
0 wk
Wild chives
Allium schoenoprasum
19 Mar – 2 Apr
1 Jun
6-8 wk
14 May
13 Jul
0 wk
15 May
3 Jul
0 wk
Spearmint
Mentha spicata
19 Feb – 19 Mar
18 May
8-12 wk
14 May
13 Jul
0 wk
8 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
14 May
10 Aug
0 wk
27 May
31 Jul
2 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
3 May
8-10 wk
20 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
5 – 19 Mar
8 May
8-10 wk
14 May
3 Jul
0 wk
Oregano
Origanum vulgare
19 Mar – 2 Apr
22 May
6-8 wk
14 May
3 Jul
0 wk
8 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
19 Mar – 2 Apr
22 May
6-8 wk
14 May
3 Jul
0 wk
15 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
11 Feb – 11 Mar
25 Mar
10-14 wk
20 May
3 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
6 – 13 May
28 May
3-4 wk
3 Jun
18 Jun
3 wk after
Cornflower
Centaurea cyanus
14 May
13 Jul
0 wk
15 May
3 Jul
0 wk
Statice
Limonium sinuatum
25 Mar – 8 Apr
16 Apr
8-10 wk
3 Jun
11 Jun
3 wk after
Sweet William
Dianthus barbatus
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
24 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
30 Apr
6-8 wk
3 Jun
11 Jun
3 wk after
20 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Apr
7 May
6-8 wk
29 May
18 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
13 Apr – 11 May
21 May
4-8 wk
8 Jun
18 Jun
4 wk after
8 Jun
8 Jun
4 wk after
Foxglove
Digitalis purpurea
5 – 19 Mar
8-10 wk
14 May
0 wk
27 May
2 wk after
Busy lizzie
Impatiens walleriana
25 Mar – 22 Apr
8 Jun
8-12 wk
17 Jun
3 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
10 May
6-8 wk
3 Jun
21 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
3 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Mar
16 Apr
8-10 wk
20 May
11 Jun
1 wk after
Love in a mist
Nigella damascena
14 May
28 Jun
0 wk
15 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
2 wk after
3 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
16 Apr
8-12 wk
20 May
11 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
2 – 30 Mar
19 Mar
8-12 wk
25 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
11 Mar – 8 Apr
13 Apr
8-12 wk
3 Jun
8 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Apr
27 Apr
6-8 wk
3 Jun
8 Jun
3 wk after
Corn poppy
Papaver rhoeas
14 May
13 Jul
0 wk
15 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
19 Feb – 19 Mar
8 May
8-12 wk
14 May
3 Jul
0 wk
24 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
25 Mar – 8 Apr
6 May
8-10 wk
3 Jun
1 Jul
3 wk after
Sweet pea
Lathyrus odoratus
19 Mar – 9 Apr
29 May
5-8 wk
14 May
3 Jul
0 wk
Stock
Matthiola incana
19 Mar – 2 Apr
1 Jun
6-8 wk
14 May
13 Jul
0 wk
27 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
19 Mar – 2 Apr
2 May
6-8 wk
14 May
13 Jun
0 wk
27 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
6 May
4-6 wk
3 Jun
3 Jun
3 wk after
Garden pansy
Viola × wittrockiana
5 – 19 Mar
18 May
8-10 wk
14 May
13 Jul
0 wk
24 May
3 Jul
1 wk after
Petunia
Petunia
11 Mar – 8 Apr
16 Apr
8-12 wk
3 Jun
11 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
30 Apr
6-8 wk
20 May
11 Jun
1 wk after
26 Jun
6 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
21 May
4-6 wk
3 Jun
18 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
29 Apr – 13 May
28 May
3-5 wk
3 Jun
18 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
22 Apr – 6 May
21 May
4-6 wk
3 Jun
18 Jun
3 wk after
26 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
25 Mar – 22 Apr
13 May
8-12 wk
17 Jun
8 Jul
5 wk after
Bee balm
Monarda didyma
19 Feb – 19 Mar
18 Apr
8-12 wk
14 May
13 Jun
0 wk
8 Jun
4 wk after
Yarrow
Achillea millefolium
19 Mar – 2 Apr
2 Apr
6-8 wk
14 May
14 May
0 wk
27 May
2 wk after
Safflower
Carthamus tinctorius
14 May
13 Jun
0 wk
15 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
19 Mar – 2 Apr
22 May
6-8 wk
14 May
3 Jul
0 wk
28 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
2 – 16 Apr
5 Jun
4-6 wk
14 May
3 Jul
0 wk
27 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
30 Mar
10-12 wk
25 May
8 Jun
2 wk after
Sunflower
Helianthus annuus
6 – 13 May
2 Jun
3-4 wk
3 Jun
23 Jun
3 wk after
8 Jun
13 Jun
4 wk after
China aster
Callistephus chinensis
8 – 22 Apr
22 May
6-8 wk
3 Jun
3 Jul
3 wk after
26 Jun
6 wk after
Annual phlox
Phlox drummondii
30 Mar – 13 Apr
10 May
6-8 wk
25 May
21 Jun
2 wk after
26 Jun
6 wk after
Hollyhock
Alcea rosea
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
27 May
2 wk after
Alpine delphinium
Delphinium elatum
19 Feb – 19 Mar
18 Apr
8-12 wk
14 May
13 Jun
0 wk
8 Jun
4 wk after
African marigold
Tagetes erecta
8 – 22 Apr
10 May
6-8 wk
3 Jun
21 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
12 May
6-8 wk
20 May
23 Jun
1 wk after
26 Jun
6 wk after
Wood sage
Salvia nemorosa
5 – 19 Mar
8 Apr
8-10 wk
14 May
3 Jun
0 wk
8 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
25 Mar – 22 Apr
7 May
6-10 wk
3 Jun
18 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
14 May
13 Jul
0 wk
15 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
23 Apr
8-10 wk
3 Jun
18 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
19 Mar – 2 Apr
2 May
6-8 wk
14 May
13 Jun
0 wk
27 May
3 Jun
2 wk after