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Method
Rel. frost
Last spring frost (0°C) 25 May Frost 3 of 4 years · 20 years of data
Frost-free season 114 days 25 May – 16 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)
6 – 20 Apr
12 Jun
5-7 wk
25 May
17 Jul
0 wk
26 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
24 Jun
4-6 wk
25 May
22 Jul
0 wk
26 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
7 Jun
5-7 wk
25 May
12 Jul
0 wk
25 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
3 – 10 May
16 May
3-4 wk
31 May
6 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
3 – 10 May
4 Jun
4-5 wk
7 Jun
2 Jul
2 wk after
19 Jun
22 Jun
4 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)
Greenhouse
2 – 30 Mar
19 Mar
8-12 wk
25 May
0 wk
25 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
16 May
3 Jun
1 wk before
16 May
24 May
1 wk before
Maize
Zea mays
Season too short
27 Apr – 4 May
6 May
3-4 wk
25 May
27 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
1 Jul
3-4 wk
27 May
22 Jul
0 wk
7 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
2 Jul
0 wk
25 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
7 Jun
5-7 wk
25 May
12 Jul
0 wk
25 May
2 Jul
0 wk
Potato
Solanum tuberosum
Season too short
10 – 24 Apr
15 May
4-6 wk
22 May
12 Jun
0 wk
22 May
2 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
17 Jun
5-7 wk
25 May
22 Jul
0 wk
26 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
3 – 10 May
16 Jun
3-4 wk
31 May
7 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Greenhouse
27 Apr – 4 May
24 May
3-4 wk
25 May
14 Jun
0 wk
25 May
4 Jun
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
19 Jun
4-6 wk
25 May
17 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
6 Jul
3-4 wk
25 May
27 Jul
0 wk
26 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
19 Jun
4-6 wk
25 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
11 – 25 Apr
28 May
2-4 wk
9 May
11 Jun
2 wk before
9 May
1 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
16 May
3 Jun
1 wk before
16 May
24 May
1 wk before
Spinach
Spinacia oleracea
27 Apr – 4 May
21 Jul
3-4 wk
25 May
11 Aug
0 wk
22 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
30 Mar – 13 Apr
15 Apr
6-8 wk
25 May
27 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
3 – 17 May
23 May
2-4 wk
31 May
6 Jun
1 wk after
19 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
19 Jun
4-6 wk
25 May
17 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
21 Jun
3-4 wk
25 May
12 Jul
0 wk
26 May
2 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
Greenhouse
19 Apr – 3 May
25 May
4-6 wk
31 May
22 Jun
1 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
17 May
8-10 wk
25 May
12 Jul
0 wk
19 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
26 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
31 May
6-8 wk
25 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
17 May
8-12 wk
25 May
12 Jul
0 wk
19 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
25 May
11 Aug
0 wk
7 Jun
1 Aug
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
2 May
8-10 wk
27 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
16 – 30 Mar
7 May
8-10 wk
25 May
2 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
21 May
6-8 wk
25 May
2 Jul
0 wk
19 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
21 May
6-8 wk
25 May
2 Jul
0 wk
26 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
18 Feb – 18 Mar
30 Mar
10-14 wk
27 May
8 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
3 – 10 May
1 Jun
3-4 wk
31 May
22 Jun
1 wk after
Cornflower
Centaurea cyanus
25 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Statice
Limonium sinuatum
Fleece
22 Mar – 5 Apr
22 Apr
8-10 wk
31 May
17 Jun
1 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
Fleece
5 – 19 Apr
6 May
6-8 wk
31 May
17 Jun
1 wk after
14 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
1 – 15 Apr
7 May
6-8 wk
27 May
18 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
5 Apr – 3 May
3 Jun
4-8 wk
31 May
1 Jul
1 wk after
31 May
21 Jun
1 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
17 May
8-12 wk
26 Jun
12 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
5 – 19 Apr
16 May
6-8 wk
31 May
27 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
26 Apr – 10 May
4-6 wk
7 Jun
2 wk after
Chinese lantern
Physalis alkekengi
18 Mar – 1 Apr
17 Apr
8-10 wk
27 May
12 Jun
0 wk
Love in a mist
Nigella damascena
25 May
27 Jun
0 wk
26 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
5 – 19 Apr
26 Apr
6-8 wk
31 May
7 Jun
1 wk after
14 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
4 Mar – 1 Apr
17 Apr
8-12 wk
27 May
12 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
2 – 30 Mar
18 Mar
8-12 wk
25 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
8 Mar – 5 Apr
17 Apr
8-12 wk
31 May
12 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
5 – 19 Apr
1 May
6-8 wk
31 May
12 Jun
1 wk after
Corn poppy
Papaver rhoeas
25 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
2 – 30 Mar
7 May
8-12 wk
25 May
2 Jul
0 wk
4 Jun
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
22 Mar – 5 Apr
13 May
8-10 wk
31 May
8 Jul
1 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
28 May
5-8 wk
25 May
2 Jul
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
31 May
6-8 wk
25 May
12 Jul
0 wk
7 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
1 May
6-8 wk
25 May
12 Jun
0 wk
7 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
19 Apr – 3 May
10 May
4-6 wk
31 May
7 Jun
1 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
17 May
8-10 wk
25 May
12 Jul
0 wk
4 Jun
2 Jul
1 wk after
Petunia
Petunia
Fleece
8 Mar – 5 Apr
22 Apr
8-12 wk
31 May
17 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Apr
1 May
6-8 wk
27 May
12 Jun
0 wk
7 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
19 Apr – 3 May
25 May
4-6 wk
31 May
22 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
26 Apr – 10 May
1 Jun
3-5 wk
31 May
22 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
19 Apr – 3 May
21 May
4-6 wk
31 May
18 Jun
1 wk after
19 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
15 Mar – 12 Apr
17 May
8-12 wk
7 Jun
12 Jul
2 wk after
Bee balm
Monarda didyma
2 – 30 Mar
17 Apr
8-12 wk
25 May
12 Jun
0 wk
19 Jun
4 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
1 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Safflower
Carthamus tinctorius
25 May
12 Jun
0 wk
26 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
21 May
6-8 wk
25 May
2 Jul
0 wk
9 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
4 Jun
4-6 wk
25 May
2 Jul
0 wk
7 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
8 – 22 Mar
20 Mar
10-12 wk
31 May
1 wk after
Sunflower
Helianthus annuus
10 – 17 May
7 Jun
3-4 wk
7 Jun
28 Jun
2 wk after
19 Jun
4 wk after
China aster
Callistephus chinensis
12 – 26 Apr
27 May
6-8 wk
7 Jun
8 Jul
2 wk after
7 Jul
6 wk after
Annual phlox
Phlox drummondii
5 – 19 Apr
1 May
6-8 wk
31 May
12 Jun
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
17 Apr
8-12 wk
25 May
12 Jun
0 wk
19 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
5 – 19 Apr
16 May
6-8 wk
31 May
27 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Apr
17 May
6-8 wk
27 May
28 Jun
0 wk
7 Jul
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
7 Apr
8-10 wk
25 May
2 Jun
0 wk
19 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
22 Mar – 19 Apr
11 May
6-10 wk
31 May
22 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
25 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
22 Mar – 5 Apr
7 May
8-10 wk
31 May
2 Jul
1 wk after
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
1 May
6-8 wk
25 May
12 Jun
0 wk
7 Jun
2 wk after