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