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Method
Rel. frost
Last spring frost (0°C) 31 May Frost 1 of 10 years · 20 years of data
Frost-free season 133 days 31 May – 11 Oct
Probability that frost is over

90% = 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)
12 – 26 Apr
17 Jun
5-7 wk
31 May
22 Jul
0 wk
24 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
19 Apr – 3 May
29 Jun
4-6 wk
31 May
27 Jul
0 wk
24 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
14 Mar – 11 Apr
8-12 wk
6 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Apr
12 Jun
5-7 wk
31 May
17 Jul
0 wk
19 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
9 – 16 May
3-4 wk
6 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
28 May – 4 Jun
9 Jun
4-5 wk
2 Jul
7 Jul
5 wk after
6 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
11 – 18 Jun
3-4 wk
9 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Mar – 5 Apr
31 Mar
8-12 wk
31 May
0 wk
10 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 May
15 Jun
1 wk before
24 May
5 Jun
1 wk before
Maize
Zea mays
Season too short
3 – 10 May
3-4 wk
31 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
6 Jul
3-4 wk
2 Jun
27 Jul
0 wk
10 Jun
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 May
7 Jul
0 wk
19 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Apr
12 Jun
5-7 wk
31 May
17 Jul
0 wk
19 May
7 Jul
2 wk before
Potato
Solanum tuberosum
24 Apr – 8 May
20 May
4-6 wk
5 Jun
17 Jun
1 wk after
5 Jun
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Apr
22 Jun
5-7 wk
31 May
27 Jul
0 wk
24 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
9 – 16 May
12 Jun
3-4 wk
6 Jun
3 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
22 May
3-4 wk
2 Jun
12 Jun
0 wk
10 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Apr – 3 May
24 Jun
4-6 wk
31 May
22 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 May
11 Jul
3-4 wk
31 May
1 Aug
0 wk
24 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Apr – 3 May
24 Jun
4-6 wk
31 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
2 Jun
2-4 wk
19 May
16 Jun
2 wk before
19 May
6 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 May
15 Jun
1 wk before
24 May
5 Jun
1 wk before
Spinach
Spinacia oleracea
3 – 10 May
26 Jul
3-4 wk
31 May
16 Aug
0 wk
13 May
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 Jun – 11 Jul
4-6 wk
8 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
9 – 23 May
11 May
2-4 wk
6 Jun
1 wk after
21 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Apr – 3 May
24 Jun
4-6 wk
31 May
22 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 May
26 Jun
3-4 wk
31 May
17 Jul
0 wk
24 May
7 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Greenhouse
25 Apr – 9 May
21 May
4-6 wk
6 Jun
18 Jun
1 wk after
Lemon balm
Melissa officinalis
22 Mar – 5 Apr
22 May
8-10 wk
31 May
17 Jul
0 wk
21 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
24 May
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Apr
5 Jun
6-8 wk
31 May
17 Jul
0 wk
24 May
7 Jul
1 wk before
Spearmint
Mentha spicata
8 Mar – 5 Apr
22 May
8-12 wk
31 May
17 Jul
0 wk
21 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
31 May
16 Aug
0 wk
10 Jun
6 Aug
1 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
7 May
8-10 wk
2 Jun
2 Jul
0 wk
Common thyme
Thymus vulgaris
22 Mar – 5 Apr
12 May
8-10 wk
31 May
7 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Apr
26 May
6-8 wk
31 May
7 Jul
0 wk
21 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
5 – 19 Apr
26 May
6-8 wk
31 May
7 Jul
0 wk
24 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
24 Feb – 24 Mar
8 Apr
10-14 wk
2 Jun
17 Jun
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
Greenhouse
9 – 16 May
28 May
3-4 wk
6 Jun
18 Jun
1 wk after
Cornflower
Centaurea cyanus
31 May
17 Jul
0 wk
24 May
7 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
28 Mar – 11 Apr
18 Apr
8-10 wk
6 Jun
13 Jun
1 wk after
Sweet William
Dianthus barbatus
5 – 19 Apr
6-8 wk
31 May
0 wk
5 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
11 – 25 Apr
2 May
6-8 wk
6 Jun
13 Jun
1 wk after
16 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Apr
27 Apr
6-8 wk
11 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
15 Apr – 13 May
26 May
4-8 wk
10 Jun
23 Jun
1 wk after
10 Jun
13 Jun
1 wk after
Foxglove
Digitalis purpurea
22 Mar – 5 Apr
8-10 wk
31 May
0 wk
10 Jun
1 wk after
Busy lizzie
Impatiens walleriana
9 Apr – 7 May
5 May
8-12 wk
2 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
11 – 25 Apr
12 May
6-8 wk
6 Jun
23 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
2 – 16 May
4-6 wk
13 Jun
2 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
22 Apr
8-10 wk
2 Jun
17 Jun
0 wk
Love in a mist
Nigella damascena
31 May
2 Jul
0 wk
24 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
11 – 25 Apr
22 Apr
6-8 wk
6 Jun
1 wk after
16 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
22 Apr
8-12 wk
2 Jun
17 Jun
0 wk
Cardoon
Cynara cardunculus
21 Mar – 18 Apr
23 Mar
8-12 wk
13 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
14 Mar – 11 Apr
13 Apr
8-12 wk
6 Jun
8 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
11 – 25 Apr
27 Apr
6-8 wk
6 Jun
8 Jun
1 wk after
Corn poppy
Papaver rhoeas
31 May
17 Jul
0 wk
24 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
8 Mar – 5 Apr
12 May
8-12 wk
31 May
7 Jul
0 wk
5 Jun
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
4 – 18 Apr
28 Apr
8-10 wk
13 Jun
23 Jun
2 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Apr
2 Jun
5-8 wk
31 May
7 Jul
0 wk
Stock
Matthiola incana
5 – 19 Apr
5 Jun
6-8 wk
31 May
17 Jul
0 wk
10 Jun
7 Jul
1 wk after
Wormwood
Artemisia absinthium
5 – 19 Apr
6 May
6-8 wk
31 May
17 Jun
0 wk
10 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
25 Apr – 9 May
6 May
4-6 wk
6 Jun
1 wk after
Garden pansy
Viola × wittrockiana
22 Mar – 5 Apr
22 May
8-10 wk
31 May
17 Jul
0 wk
5 Jun
7 Jul
1 wk after
Petunia
Petunia
Fleece
14 Mar – 11 Apr
18 Apr
8-12 wk
6 Jun
13 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
6 May
6-8 wk
2 Jun
17 Jun
0 wk
6 Jul
5 wk after
Common zinnia
Zinnia elegans
Fleece
25 Apr – 9 May
21 May
4-6 wk
6 Jun
18 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
2 – 16 May
28 May
3-5 wk
6 Jun
18 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
2 – 16 May
11 May
4-6 wk
13 Jun
2 wk after
6 Jul
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
21 Mar – 18 Apr
13 May
8-12 wk
13 Jun
8 Jul
2 wk after
Bee balm
Monarda didyma
8 Mar – 5 Apr
22 Apr
8-12 wk
31 May
17 Jun
0 wk
21 Jun
3 wk after
Yarrow
Achillea millefolium
5 – 19 Apr
6 Apr
6-8 wk
31 May
0 wk
10 Jun
1 wk after
Safflower
Carthamus tinctorius
31 May
17 Jun
0 wk
24 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
5 – 19 Apr
26 May
6-8 wk
31 May
7 Jul
0 wk
22 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
19 Apr – 3 May
9 Jun
4-6 wk
31 May
7 Jul
0 wk
10 Jun
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
14 – 28 Mar
25 Mar
10-12 wk
6 Jun
1 wk after
Sunflower
Helianthus annuus
16 – 23 May
16 Jun
3-4 wk
13 Jun
7 Jul
2 wk after
21 Jun
27 Jun
3 wk after
China aster
Callistephus chinensis
18 Apr – 2 May
5 Jun
6-8 wk
13 Jun
17 Jul
2 wk after
6 Jul
7 Jul
5 wk after
Annual phlox
Phlox drummondii
11 – 25 Apr
20 Apr
6-8 wk
6 Jun
1 wk after
6 Jul
5 wk after
Hollyhock
Alcea rosea
5 – 19 Apr
6-8 wk
31 May
0 wk
10 Jun
1 wk after
Alpine delphinium
Delphinium elatum
8 Mar – 5 Apr
22 Apr
8-12 wk
31 May
17 Jun
0 wk
21 Jun
3 wk after
African marigold
Tagetes erecta
Fleece
11 – 25 Apr
12 May
6-8 wk
6 Jun
23 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
26 May
6-8 wk
2 Jun
7 Jul
0 wk
6 Jul
5 wk after
Wood sage
Salvia nemorosa
22 Mar – 5 Apr
12 Apr
8-10 wk
31 May
7 Jun
0 wk
21 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
28 Mar – 25 Apr
7 May
6-10 wk
6 Jun
18 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
31 May
17 Jul
0 wk
24 May
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
4 – 18 Apr
12 May
8-10 wk
13 Jun
7 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Apr
6 May
6-8 wk
31 May
17 Jun
0 wk
10 Jun
1 wk after