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Method
Rel. frost
Last spring frost (0°C) 26 May Frost 3 of 4 years · 20 years of data
Frost-free season 99 days 26 May – 2 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)
7 – 21 Apr
13 Jun
5-7 wk
26 May
18 Jul
0 wk
27 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Apr
25 Jun
4-6 wk
26 May
23 Jul
0 wk
27 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
9 Mar – 6 Apr
21 Mar
8-12 wk
1 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Apr
8 Jun
5-7 wk
26 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
4 – 11 May
29 May
3-4 wk
1 Jun
19 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
4 – 11 May
25 May
4-5 wk
8 Jun
22 Jun
2 wk after
20 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
3 – 31 Mar
20 Mar
8-12 wk
26 May
0 wk
1 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
27 May
0 wk
27 May
0 wk
Maize
Zea mays
Fleece
4 – 11 May
5 May
3-4 wk
1 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
21 Jun
3-4 wk
28 May
12 Jul
0 wk
8 Jun
2 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 May
1 Jul
0 wk
26 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Apr
8 Jun
5-7 wk
26 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Potato
Solanum tuberosum
24 Apr – 8 May
10 May
4-6 wk
5 Jun
7 Jun
1 wk after
5 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Apr
16 Jun
5-7 wk
26 May
21 Jul
0 wk
27 May
11 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
11 – 18 May
3 Jun
3-4 wk
8 Jun
24 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
30 Apr – 7 May
15 May
3-4 wk
28 May
5 Jun
0 wk
8 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Apr
20 Jun
4-6 wk
26 May
18 Jul
0 wk
Lettuce
Lactuca sativa
28 Apr – 5 May
5 Jul
3-4 wk
26 May
26 Jul
0 wk
27 May
16 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Apr
20 Jun
4-6 wk
26 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Apr – 12 May
16 May
2-4 wk
26 May
30 May
0 wk
26 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 May
0 wk
27 May
0 wk
Spinach
Spinacia oleracea
28 Apr – 5 May
22 Jul
3-4 wk
26 May
12 Aug
0 wk
23 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
6 – 20 Apr
14 Apr
6-8 wk
1 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
4 – 18 May
5 Jun
2-4 wk
1 Jun
19 Jun
1 wk after
20 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Apr
20 Jun
4-6 wk
26 May
18 Jul
0 wk
Garden pea
Pisum sativum
28 Apr – 5 May
20 Jun
3-4 wk
26 May
11 Jul
0 wk
27 May
1 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
20 Apr – 4 May
27 May
4-6 wk
1 Jun
24 Jun
1 wk after
Lemon balm
Melissa officinalis
17 – 31 Mar
16 May
8-10 wk
26 May
11 Jul
0 wk
20 Jun
1 Jul
4 wk after
Dill
Anethum graveolens
27 May
12 Jul
0 wk
Wild chives
Allium schoenoprasum
31 Mar – 14 Apr
1 Jun
6-8 wk
26 May
13 Jul
0 wk
27 May
3 Jul
0 wk
Spearmint
Mentha spicata
3 – 31 Mar
18 May
8-12 wk
26 May
13 Jul
0 wk
20 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
26 May
1 Aug
0 wk
8 Jun
22 Jul
2 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
3 May
8-10 wk
28 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
17 – 31 Mar
8 May
8-10 wk
26 May
3 Jul
0 wk
Oregano
Origanum vulgare
31 Mar – 14 Apr
22 May
6-8 wk
26 May
3 Jul
0 wk
20 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
31 Mar – 14 Apr
22 May
6-8 wk
26 May
3 Jul
0 wk
27 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
19 Feb – 19 Mar
20 Mar
10-14 wk
28 May
29 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
Greenhouse
4 – 11 May
3 Jun
3-4 wk
1 Jun
24 Jun
1 wk after
Cornflower
Centaurea cyanus
26 May
13 Jul
0 wk
27 May
3 Jul
0 wk
Statice
Limonium sinuatum
Fleece
23 Mar – 6 Apr
23 Apr
8-10 wk
1 Jun
18 Jun
1 wk after
Sweet William
Dianthus barbatus
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
5 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
6 – 20 Apr
7 May
6-8 wk
1 Jun
18 Jun
1 wk after
15 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Apr
3 May
6-8 wk
6 Jun
14 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
25 Apr – 23 May
17 May
4-8 wk
20 Jun
4 wk after
20 Jun
4 wk after
Foxglove
Digitalis purpurea
17 – 31 Mar
8-10 wk
26 May
0 wk
8 Jun
2 wk after
Busy lizzie
Impatiens walleriana
4 Apr – 2 May
30 May
8-12 wk
27 Jun
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Apr
8 May
6-8 wk
8 Jun
19 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
27 Apr – 11 May
4-6 wk
8 Jun
2 wk after
Chinese lantern
Physalis alkekengi
19 Mar – 2 Apr
7 Apr
8-10 wk
28 May
2 Jun
0 wk
Love in a mist
Nigella damascena
26 May
26 Jun
0 wk
27 May
16 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
6 – 20 Apr
27 Apr
6-8 wk
1 Jun
8 Jun
1 wk after
15 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
5 Mar – 2 Apr
7 Apr
8-12 wk
28 May
2 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
3 – 31 Mar
19 Mar
8-12 wk
26 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
9 Mar – 6 Apr
19 Apr
8-12 wk
1 Jun
14 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
6 – 20 Apr
3 May
6-8 wk
1 Jun
14 Jun
1 wk after
Corn poppy
Papaver rhoeas
26 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Snapdragon
Antirrhinum majus
3 – 31 Mar
6 May
8-12 wk
26 May
1 Jul
0 wk
5 Jun
21 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
30 Mar – 13 Apr
3 May
8-10 wk
8 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
31 Mar – 21 Apr
29 May
5-8 wk
26 May
3 Jul
0 wk
Stock
Matthiola incana
31 Mar – 14 Apr
30 May
6-8 wk
26 May
11 Jul
0 wk
8 Jun
1 Jul
2 wk after
Wormwood
Artemisia absinthium
31 Mar – 14 Apr
2 May
6-8 wk
26 May
13 Jun
0 wk
8 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
20 Apr – 4 May
12 May
4-6 wk
1 Jun
9 Jun
1 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Mar
18 May
8-10 wk
26 May
13 Jul
0 wk
5 Jun
3 Jul
1 wk after
Petunia
Petunia
Fleece
9 Mar – 6 Apr
23 Apr
8-12 wk
1 Jun
18 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
2 – 16 Apr
21 Apr
6-8 wk
28 May
2 Jun
0 wk
8 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
20 Apr – 4 May
27 May
4-6 wk
1 Jun
24 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
27 Apr – 11 May
3 Jun
3-5 wk
1 Jun
24 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
27 Apr – 11 May
17 May
4-6 wk
8 Jun
14 Jun
2 wk after
8 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
16 Mar – 13 Apr
19 May
8-12 wk
8 Jun
14 Jul
2 wk after
Bee balm
Monarda didyma
3 – 31 Mar
16 Apr
8-12 wk
26 May
11 Jun
0 wk
20 Jun
4 wk after
Yarrow
Achillea millefolium
31 Mar – 14 Apr
2 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Safflower
Carthamus tinctorius
26 May
13 Jun
0 wk
27 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
31 Mar – 14 Apr
22 May
6-8 wk
26 May
3 Jul
0 wk
10 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
14 – 28 Apr
3 Jun
4-6 wk
26 May
1 Jul
0 wk
8 Jun
21 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
9 – 23 Mar
26 Mar
10-12 wk
1 Jun
4 Jun
1 wk after
Sunflower
Helianthus annuus
11 – 18 May
28 May
3-4 wk
8 Jun
18 Jun
2 wk after
20 Jun
4 wk after
China aster
Callistephus chinensis
13 – 27 Apr
17 May
6-8 wk
8 Jun
28 Jun
2 wk after
8 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
8 May
6-8 wk
1 Jun
19 Jun
1 wk after
8 Jul
6 wk after
Hollyhock
Alcea rosea
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Alpine delphinium
Delphinium elatum
3 – 31 Mar
16 Apr
8-12 wk
26 May
11 Jun
0 wk
20 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 Apr
8 May
6-8 wk
8 Jun
19 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
7 May
6-8 wk
28 May
18 Jun
0 wk
8 Jul
6 wk after
Wood sage
Salvia nemorosa
17 – 31 Mar
6 Apr
8-10 wk
26 May
1 Jun
0 wk
20 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
23 Mar – 20 Apr
13 May
6-10 wk
1 Jun
24 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
26 May
7 Jul
0 wk
27 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
23 Mar – 6 Apr
27 Apr
8-10 wk
1 Jun
22 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
31 Mar – 14 Apr
2 May
6-8 wk
26 May
13 Jun
0 wk
8 Jun
2 wk after