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Method
Rel. frost
Last spring frost (0°C) 25 May Frost 1 of 4 years · 20 years of data
Frost-free season 138 days 25 May – 10 Oct
Probability that frost is over

75% = 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)
6 – 20 Apr
9 Jun
5-7 wk
25 May
14 Jul
0 wk
26 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
21 Jun
4-6 wk
25 May
19 Jul
0 wk
26 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
8 Mar – 5 Apr
22 Mar
8-12 wk
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
4 Jun
5-7 wk
25 May
9 Jul
0 wk
25 May
29 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
3 – 10 May
12 Jun
3-4 wk
31 May
3 Jul
1 wk after
Florence Fennel
Foeniculum vulgare
22 – 29 May
1 Jun
4-5 wk
26 Jun
29 Jun
5 wk after
7 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
5 – 12 Jun
3-4 wk
3 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
2 – 30 Mar
17 Mar
8-12 wk
25 May
0 wk
31 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Greenhouse
16 May
9 Jun
1 wk before
16 May
30 May
1 wk before
Maize
Zea mays
Fleece
3 – 10 May
6 May
3-4 wk
31 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
28 Jun
3-4 wk
27 May
19 Jul
0 wk
7 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
29 Jun
0 wk
25 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
4 Jun
5-7 wk
25 May
9 Jul
0 wk
25 May
29 Jun
0 wk
Potato
Solanum tuberosum
Fleece
14 – 28 Apr
15 May
4-6 wk
26 May
12 Jun
0 wk
26 May
2 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
14 Jun
5-7 wk
25 May
19 Jul
0 wk
26 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
10 – 17 May
17 Jun
3-4 wk
7 Jun
8 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Apr – 6 May
10 May
3-4 wk
27 May
31 May
0 wk
7 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
16 Jun
4-6 wk
25 May
14 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
3 Jul
3-4 wk
25 May
24 Jul
0 wk
26 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
16 Jun
4-6 wk
25 May
14 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
11 – 25 Apr
26 May
2-4 wk
9 May
9 Jun
2 wk before
9 May
30 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Greenhouse
16 May
9 Jun
1 wk before
16 May
30 May
1 wk before
Spinach
Spinacia oleracea
27 Apr – 4 May
18 Jul
3-4 wk
25 May
8 Aug
0 wk
22 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
5 – 19 Apr
15 Apr
6-8 wk
31 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
3 – 17 May
19 Jun
2-4 wk
31 May
3 Jul
1 wk after
19 Jun
23 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
16 Jun
4-6 wk
25 May
14 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
18 Jun
3-4 wk
25 May
9 Jul
0 wk
26 May
29 Jun
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
26 Apr – 10 May
26 May
4-6 wk
7 Jun
23 Jun
2 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
14 May
8-10 wk
25 May
9 Jul
0 wk
19 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
26 May
19 Jul
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
28 May
6-8 wk
25 May
9 Jul
0 wk
26 May
29 Jun
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
14 May
8-12 wk
25 May
9 Jul
0 wk
19 Jun
29 Jun
4 wk after
Coriander
Coriandrum sativum
25 May
8 Aug
0 wk
7 Jun
29 Jul
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
29 Apr
8-10 wk
27 May
24 Jun
0 wk
Common thyme
Thymus vulgaris
16 – 30 Mar
4 May
8-10 wk
25 May
29 Jun
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
18 May
6-8 wk
25 May
29 Jun
0 wk
19 Jun
19 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
18 May
6-8 wk
25 May
29 Jun
0 wk
26 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
18 Feb – 18 Mar
31 Mar
10-14 wk
27 May
9 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
Fleece
10 – 17 May
2 Jun
3-4 wk
7 Jun
23 Jun
2 wk after
Cornflower
Centaurea cyanus
25 May
9 Jul
0 wk
26 May
29 Jun
0 wk
Statice
Limonium sinuatum
29 Mar – 12 Apr
28 Apr
8-10 wk
7 Jun
23 Jun
2 wk after
Sweet William
Dianthus barbatus
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
12 – 26 Apr
12 May
6-8 wk
7 Jun
23 Jun
2 wk after
31 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Apr
16 May
6-8 wk
5 Jun
27 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
12 Apr – 10 May
1 Jun
4-8 wk
7 Jun
29 Jun
2 wk after
7 Jun
19 Jun
2 wk after
Foxglove
Digitalis purpurea
16 – 30 Mar
8-10 wk
25 May
0 wk
7 Jun
2 wk after
Busy lizzie
Impatiens walleriana
3 Apr – 1 May
13 Jun
8-12 wk
26 Jun
8 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
12 – 26 Apr
22 May
6-8 wk
7 Jun
3 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
26 Apr – 10 May
26 Apr
4-6 wk
7 Jun
2 wk after
Chinese lantern
Physalis alkekengi
18 Mar – 1 Apr
14 Apr
8-10 wk
27 May
9 Jun
0 wk
Love in a mist
Nigella damascena
25 May
24 Jun
0 wk
26 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
5 – 19 Apr
8 May
6-8 wk
31 May
19 Jun
1 wk after
14 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
4 Mar – 1 Apr
14 Apr
8-12 wk
27 May
9 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
8 Mar – 5 Apr
15 Mar
8-12 wk
31 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
8 Mar – 5 Apr
2 May
8-12 wk
31 May
27 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
5 – 19 Apr
16 May
6-8 wk
31 May
27 Jun
1 wk after
Corn poppy
Papaver rhoeas
25 May
9 Jul
0 wk
26 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
2 – 30 Mar
4 May
8-12 wk
25 May
29 Jun
0 wk
4 Jun
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
17 Apr – 1 May
8 May
8-10 wk
26 Jun
3 Jul
5 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
25 May
5-8 wk
25 May
29 Jun
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
28 May
6-8 wk
25 May
9 Jul
0 wk
7 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
28 Apr
6-8 wk
25 May
9 Jun
0 wk
7 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
19 Apr – 3 May
25 May
4-6 wk
31 May
22 Jun
1 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
14 May
8-10 wk
25 May
9 Jul
0 wk
4 Jun
29 Jun
1 wk after
Petunia
Petunia
15 Mar – 12 Apr
28 Apr
8-12 wk
7 Jun
23 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Apr
28 Apr
6-8 wk
27 May
9 Jun
0 wk
7 Jul
6 wk after
Common zinnia
Zinnia elegans
26 Apr – 10 May
26 May
4-6 wk
7 Jun
23 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
3 – 17 May
2 Jun
3-5 wk
7 Jun
23 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
26 Apr – 10 May
30 May
4-6 wk
7 Jun
27 Jun
2 wk after
7 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
3 Apr – 1 May
18 May
8-12 wk
26 Jun
13 Jul
5 wk after
Bee balm
Monarda didyma
2 – 30 Mar
14 Apr
8-12 wk
25 May
9 Jun
0 wk
19 Jun
4 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Safflower
Carthamus tinctorius
25 May
9 Jun
0 wk
26 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
18 May
6-8 wk
25 May
29 Jun
0 wk
9 May
19 Jun
2 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
1 Jun
4-6 wk
25 May
29 Jun
0 wk
7 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
8 – 22 Mar
31 Mar
10-12 wk
31 May
9 Jun
1 wk after
Sunflower
Helianthus annuus
10 – 17 May
8 Jun
3-4 wk
7 Jun
29 Jun
2 wk after
19 Jun
19 Jun
4 wk after
China aster
Callistephus chinensis
12 – 26 Apr
28 May
6-8 wk
7 Jun
9 Jul
2 wk after
7 Jul
6 wk after
Annual phlox
Phlox drummondii
5 – 19 Apr
22 May
6-8 wk
31 May
3 Jul
1 wk after
7 Jul
6 wk after
Hollyhock
Alcea rosea
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Mar
14 Apr
8-12 wk
25 May
9 Jun
0 wk
19 Jun
4 wk after
African marigold
Tagetes erecta
12 – 26 Apr
22 May
6-8 wk
7 Jun
3 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Apr
18 May
6-8 wk
27 May
29 Jun
0 wk
7 Jul
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
4 Apr
8-10 wk
25 May
30 May
0 wk
19 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
29 Mar – 26 Apr
12 May
6-10 wk
7 Jun
23 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
25 May
9 Jul
0 wk
26 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
29 Mar – 12 Apr
4 May
8-10 wk
7 Jun
29 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
28 Apr
6-8 wk
25 May
9 Jun
0 wk
7 Jun
2 wk after