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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 1 of 10 years · 20 years of data
Frost-free season 134 days 28 May – 9 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)
9 – 23 Apr
14 Jun
5-7 wk
28 May
19 Jul
0 wk
1 Jun
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
26 Jun
4-6 wk
28 May
24 Jul
0 wk
1 Jun
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
20 Mar – 17 Apr
8-12 wk
12 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
9 Jun
5-7 wk
28 May
14 Jul
0 wk
28 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
15 – 22 May
3-4 wk
12 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
5 – 12 Jun
6 Jun
4-5 wk
10 Jul
6 wk after
16 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
17 – 24 Jun
3-4 wk
15 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Mar – 2 Apr
30 Mar
8-12 wk
28 May
0 wk
18 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Jun
14 Jun
1 wk after
1 Jun
4 Jun
1 wk after
Maize
Zea mays
Greenhouse
1 – 8 May
1 May
3-4 wk
29 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 May
3 Jul
3-4 wk
5 Jun
24 Jul
1 wk after
18 Jun
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
4 Jul
0 wk
28 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
9 Jun
5-7 wk
28 May
14 Jul
0 wk
28 May
4 Jul
0 wk
Potato
Solanum tuberosum
2 – 16 May
6 Jun
4-6 wk
13 Jun
4 Jul
2 wk after
13 Jun
24 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
19 Jun
5-7 wk
28 May
24 Jul
0 wk
1 Jun
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
27 May – 3 Jun
3-4 wk
24 Jun
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 May
15 Jun
3-4 wk
5 Jun
6 Jul
1 wk after
18 Jun
26 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
8 Jul
3-4 wk
28 May
29 Jul
0 wk
1 Jun
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
31 May
2-4 wk
28 May
14 Jun
0 wk
28 May
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 Jun
14 Jun
1 wk after
1 Jun
4 Jun
1 wk after
Spinach
Spinacia oleracea
30 Apr – 7 May
23 Jul
3-4 wk
28 May
13 Aug
0 wk
24 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
29 Jun – 13 Jul
4-6 wk
10 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
3 – 17 Apr
10 Apr
6-8 wk
29 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
15 – 29 May
18 May
2-4 wk
12 Jun
2 wk after
2 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
23 Jun
3-4 wk
28 May
14 Jul
0 wk
1 Jun
4 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
Greenhouse
1 – 15 May
20 May
4-6 wk
12 Jun
17 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
19 May
8-10 wk
28 May
14 Jul
0 wk
2 Jul
4 Jul
5 wk after
Dill
Anethum graveolens
1 Jun
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
2 – 16 Apr
2 Jun
6-8 wk
28 May
14 Jul
0 wk
1 Jun
4 Jul
1 wk after
Spearmint
Mentha spicata
5 Mar – 2 Apr
19 May
8-12 wk
28 May
14 Jul
0 wk
2 Jul
4 Jul
5 wk after
Coriander
Coriandrum sativum
28 May
13 Aug
0 wk
18 Jun
3 Aug
3 wk after
Garden sage
Salvia officinalis
27 Mar – 10 Apr
4 May
8-10 wk
5 Jun
29 Jun
1 wk after
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
9 May
8-10 wk
28 May
4 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
0 wk
2 Jul
5 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
0 wk
1 Jun
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
27 Feb – 27 Mar
5 Apr
10-14 wk
5 Jun
14 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
Greenhouse
15 – 22 May
27 May
3-4 wk
12 Jun
17 Jun
2 wk after
Cornflower
Centaurea cyanus
28 May
14 Jul
0 wk
1 Jun
4 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
3 – 17 Apr
19 Apr
8-10 wk
12 Jun
14 Jun
2 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
13 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
17 Apr – 1 May
3 May
6-8 wk
12 Jun
14 Jun
2 wk after
26 Jul
8 wk after
Pinnate dahlia
Dahlia × pinnata
21 Apr – 5 May
26 Apr
6-8 wk
16 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
7 May – 4 Jun
10 May
4-8 wk
2 Jul
5 wk after
2 Jul
5 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
18 Jun
3 wk after
Busy lizzie
Impatiens walleriana
17 Apr – 15 May
12 May
8-12 wk
10 Jul
6 wk after
Creeping zinnia
Sanvitalia procumbens
29 Apr – 13 May
6-8 wk
24 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 May
4-6 wk
24 Jun
4 wk after
Chinese lantern
Physalis alkekengi
27 Mar – 10 Apr
19 Apr
8-10 wk
5 Jun
14 Jun
1 wk after
Love in a mist
Nigella damascena
28 May
29 Jun
0 wk
1 Jun
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
17 Apr – 1 May
23 Apr
6-8 wk
12 Jun
2 wk after
26 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
13 Mar – 10 Apr
19 Apr
8-12 wk
5 Jun
14 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
20 Mar – 17 Apr
20 Mar
8-12 wk
12 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
20 Mar – 17 Apr
12 Apr
8-12 wk
12 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
17 Apr – 1 May
26 Apr
6-8 wk
12 Jun
2 wk after
Corn poppy
Papaver rhoeas
28 May
14 Jul
0 wk
1 Jun
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
9 May
8-12 wk
28 May
4 Jul
0 wk
13 Jun
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
15 – 29 Apr
29 Apr
8-10 wk
24 Jun
24 Jun
4 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
30 May
5-8 wk
28 May
4 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
2 Jun
6-8 wk
28 May
14 Jul
0 wk
18 Jun
4 Jul
3 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
3 May
6-8 wk
28 May
14 Jun
0 wk
18 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
1 – 15 May
5 May
4-6 wk
12 Jun
2 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
19 May
8-10 wk
28 May
14 Jul
0 wk
13 Jun
4 Jul
2 wk after
Petunia
Petunia
Fleece
20 Mar – 17 Apr
19 Apr
8-12 wk
12 Jun
14 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Apr
3 May
6-8 wk
5 Jun
14 Jun
1 wk after
16 Jul
7 wk after
Common zinnia
Zinnia elegans
Fleece
1 – 15 May
20 May
4-6 wk
12 Jun
17 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
8 – 22 May
27 May
3-5 wk
12 Jun
17 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
13 – 27 May
4-6 wk
24 Jun
4 wk after
16 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
17 Apr – 15 May
8-12 wk
10 Jul
6 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
19 Apr
8-12 wk
28 May
14 Jun
0 wk
2 Jul
5 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
3 Apr
6-8 wk
28 May
0 wk
18 Jun
3 wk after
Safflower
Carthamus tinctorius
28 May
14 Jun
0 wk
1 Jun
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
0 wk
10 May
24 Jun
3 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
6 Jun
4-6 wk
28 May
4 Jul
0 wk
18 Jun
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
20 Mar – 3 Apr
21 Mar
10-12 wk
12 Jun
2 wk after
Sunflower
Helianthus annuus
27 May – 3 Jun
13 Jun
3-4 wk
24 Jun
4 Jul
4 wk after
2 Jul
5 wk after
China aster
Callistephus chinensis
29 Apr – 13 May
2 Jun
6-8 wk
24 Jun
14 Jul
4 wk after
16 Jul
7 wk after
Annual phlox
Phlox drummondii
17 Apr – 1 May
20 Apr
6-8 wk
12 Jun
2 wk after
16 Jul
7 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
18 Jun
3 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
19 Apr
8-12 wk
28 May
14 Jun
0 wk
2 Jul
5 wk after
African marigold
Tagetes erecta
29 Apr – 13 May
6-8 wk
24 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Apr
23 May
6-8 wk
5 Jun
4 Jul
1 wk after
16 Jul
7 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
9 Apr
8-10 wk
28 May
4 Jun
0 wk
2 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
3 Apr – 1 May
6 May
6-10 wk
12 Jun
17 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
28 May
14 Jul
0 wk
1 Jun
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
15 – 29 Apr
9 May
8-10 wk
24 Jun
4 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
3 May
6-8 wk
28 May
14 Jun
0 wk
18 Jun
3 wk after