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Method
Rel. frost
Last spring frost (0°C) 12 May Frost 3 of 4 years · 20 years of data
Frost-free season 115 days 12 May – 4 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)
24 Mar – 7 Apr
13 Jun
5-7 wk
12 May
18 Jul
0 wk
13 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
25 Jun
4-6 wk
12 May
23 Jul
0 wk
13 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
27 Feb – 27 Mar
24 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
8 Jun
5-7 wk
12 May
13 Jul
0 wk
12 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
4 – 11 May
18 May
3-4 wk
1 Jun
8 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
3 Jun
4-5 wk
1 Jun
1 Jul
3 wk after
6 Jun
21 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
17 Mar
8-12 wk
12 May
12 May
0 wk
25 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
1 Jun
0 wk
13 May
22 May
0 wk
Maize
Zea mays
Fleece
24 Apr – 1 May
8 May
3-4 wk
22 May
29 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
30 Jun
3-4 wk
17 May
21 Jul
1 wk after
25 May
11 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
3 Jul
0 wk
12 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
8 Jun
5-7 wk
12 May
13 Jul
0 wk
12 May
3 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
15 May
4-6 wk
22 May
12 Jun
1 wk after
22 May
2 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
18 Jun
5-7 wk
12 May
23 Jul
0 wk
13 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
20 – 27 May
23 May
3-4 wk
17 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
23 May
3-4 wk
17 May
13 Jun
1 wk after
25 May
3 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
20 Jun
4-6 wk
12 May
18 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
7 Jul
3-4 wk
12 May
28 Jul
0 wk
13 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
20 Jun
4-6 wk
12 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
24 May
2-4 wk
12 May
7 Jun
0 wk
12 May
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
1 Jun
0 wk
13 May
22 May
0 wk
Spinach
Spinacia oleracea
14 – 21 Apr
22 Jul
3-4 wk
12 May
12 Aug
0 wk
9 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
27 Mar – 10 Apr
17 Apr
6-8 wk
22 May
29 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 May
25 May
2-4 wk
1 Jun
8 Jun
3 wk after
24 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
20 Jun
4-6 wk
12 May
18 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
22 Jun
3-4 wk
12 May
13 Jul
0 wk
13 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
20 Apr – 4 May
8 May
4-6 wk
1 Jun
5 Jun
3 wk after
Lemon balm
Melissa officinalis
3 – 17 Mar
18 May
8-10 wk
12 May
13 Jul
0 wk
6 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
13 May
21 Jul
0 wk
Wild chives
Allium schoenoprasum
17 – 31 Mar
1 Jun
6-8 wk
12 May
13 Jul
0 wk
13 May
3 Jul
0 wk
Spearmint
Mentha spicata
17 Feb – 17 Mar
18 May
8-12 wk
12 May
13 Jul
0 wk
6 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
12 May
10 Aug
0 wk
25 May
31 Jul
2 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
3 May
8-10 wk
17 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
3 – 17 Mar
8 May
8-10 wk
12 May
3 Jul
0 wk
Oregano
Origanum vulgare
17 – 31 Mar
22 May
6-8 wk
12 May
3 Jul
0 wk
6 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
17 – 31 Mar
22 May
6-8 wk
12 May
3 Jul
0 wk
13 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
17 Mar
10-14 wk
17 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
4 – 11 May
15 May
3-4 wk
1 Jun
5 Jun
3 wk after
Cornflower
Centaurea cyanus
12 May
13 Jul
0 wk
13 May
3 Jul
0 wk
Statice
Limonium sinuatum
23 Mar – 6 Apr
11 Apr
8-10 wk
1 Jun
6 Jun
3 wk after
Sweet William
Dianthus barbatus
17 – 31 Mar
6-8 wk
12 May
0 wk
22 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Apr
25 Apr
6-8 wk
1 Jun
6 Jun
3 wk after
18 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
30 Mar – 13 Apr
2 May
6-8 wk
25 May
13 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
11 Apr – 9 May
16 May
4-8 wk
6 Jun
13 Jun
4 wk after
6 Jun
4 wk after
Foxglove
Digitalis purpurea
3 – 17 Mar
8-10 wk
12 May
0 wk
25 May
2 wk after
Busy lizzie
Impatiens walleriana
25 Mar – 22 Apr
26 May
8-12 wk
17 Jun
21 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
5 May
6-8 wk
1 Jun
16 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
3 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
16 Apr
8-10 wk
17 May
11 Jun
1 wk after
Love in a mist
Nigella damascena
12 May
28 Jun
0 wk
13 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
27 Mar – 10 Apr
1 May
6-8 wk
22 May
12 Jun
1 wk after
1 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
16 Apr
8-12 wk
17 May
11 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
27 Feb – 27 Mar
19 Mar
8-12 wk
22 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
27 Feb – 27 Mar
18 Apr
8-12 wk
22 May
13 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
27 Mar – 10 Apr
2 May
6-8 wk
22 May
13 Jun
1 wk after
Corn poppy
Papaver rhoeas
12 May
13 Jul
0 wk
13 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
17 Feb – 17 Mar
8 May
8-12 wk
12 May
3 Jul
0 wk
22 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
8 – 22 Apr
21 Apr
8-10 wk
17 Jun
5 wk after
Sweet pea
Lathyrus odoratus
17 Mar – 7 Apr
29 May
5-8 wk
12 May
3 Jul
0 wk
Stock
Matthiola incana
17 – 31 Mar
1 Jun
6-8 wk
12 May
13 Jul
0 wk
25 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
17 – 31 Mar
2 May
6-8 wk
12 May
13 Jun
0 wk
25 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
10 – 24 Apr
11 May
4-6 wk
22 May
8 Jun
1 wk after
Garden pansy
Viola × wittrockiana
3 – 17 Mar
18 May
8-10 wk
12 May
13 Jul
0 wk
22 May
3 Jul
1 wk after
Petunia
Petunia
9 Mar – 6 Apr
11 Apr
8-12 wk
1 Jun
6 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
30 Apr
6-8 wk
17 May
11 Jun
1 wk after
24 Jun
6 wk after
Common zinnia
Zinnia elegans
20 Apr – 4 May
8 May
4-6 wk
1 Jun
5 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
27 Apr – 11 May
15 May
3-5 wk
1 Jun
5 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
20 Apr – 4 May
16 May
4-6 wk
1 Jun
13 Jun
3 wk after
24 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
25 Mar – 22 Apr
30 Apr
8-12 wk
17 Jun
25 Jun
5 wk after
Bee balm
Monarda didyma
17 Feb – 17 Mar
18 Apr
8-12 wk
12 May
13 Jun
0 wk
6 Jun
4 wk after
Yarrow
Achillea millefolium
17 – 31 Mar
2 Apr
6-8 wk
12 May
14 May
0 wk
25 May
2 wk after
Safflower
Carthamus tinctorius
12 May
13 Jun
0 wk
13 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
17 – 31 Mar
22 May
6-8 wk
12 May
3 Jul
0 wk
26 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
31 Mar – 14 Apr
5 Jun
4-6 wk
12 May
3 Jul
0 wk
25 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
27 Feb – 13 Mar
29 Mar
10-12 wk
22 May
7 Jun
1 wk after
Sunflower
Helianthus annuus
4 – 11 May
25 May
3-4 wk
1 Jun
15 Jun
3 wk after
6 Jun
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
14 May
6-8 wk
1 Jun
25 Jun
3 wk after
24 Jun
6 wk after
Annual phlox
Phlox drummondii
27 Mar – 10 Apr
5 May
6-8 wk
22 May
16 Jun
1 wk after
24 Jun
6 wk after
Hollyhock
Alcea rosea
17 – 31 Mar
6-8 wk
12 May
0 wk
25 May
2 wk after
Alpine delphinium
Delphinium elatum
17 Feb – 17 Mar
18 Apr
8-12 wk
12 May
13 Jun
0 wk
6 Jun
4 wk after
African marigold
Tagetes erecta
6 – 20 Apr
5 May
6-8 wk
1 Jun
16 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
4 May
6-8 wk
17 May
15 Jun
1 wk after
24 Jun
6 wk after
Wood sage
Salvia nemorosa
3 – 17 Mar
8 Apr
8-10 wk
12 May
3 Jun
0 wk
6 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
23 Mar – 20 Apr
24 Apr
6-10 wk
1 Jun
5 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
12 May
13 Jul
0 wk
13 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
14 Apr
8-10 wk
1 Jun
9 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
17 – 31 Mar
2 May
6-8 wk
12 May
13 Jun
0 wk
25 May
3 Jun
2 wk after