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Method
Rel. frost
Last spring frost (0°C) 21 May Frost 3 of 4 years · 20 years of data
Frost-free season 108 days 21 May – 6 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)
2 – 16 Apr
15 Jun
5-7 wk
21 May
20 Jul
0 wk
25 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
27 Jun
4-6 wk
21 May
25 Jul
0 wk
25 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
4 Mar – 1 Apr
25 Mar
8-12 wk
27 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
10 Jun
5-7 wk
21 May
15 Jul
0 wk
21 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
6 – 13 May
19 May
3-4 wk
3 Jun
9 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 Apr – 6 May
26 May
4-5 wk
3 Jun
23 Jun
2 wk after
25 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 Jun
3-4 wk
29 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
17 Mar
8-12 wk
21 May
0 wk
11 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
1 Jun
1 wk after
25 May
1 wk after
Maize
Zea mays
Fleece
29 Apr – 6 May
9 May
3-4 wk
27 May
30 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
22 Jun
3-4 wk
23 May
13 Jul
0 wk
11 Jun
3 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
5 Jul
0 wk
21 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
10 Jun
5-7 wk
21 May
15 Jul
0 wk
21 May
5 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
15 May
4-6 wk
6 Jun
12 Jun
2 wk after
6 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
20 Jun
5-7 wk
21 May
25 Jul
0 wk
25 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
25 May – 1 Jun
3-4 wk
22 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
19 May
3-4 wk
23 May
9 Jun
0 wk
11 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
9 Jul
3-4 wk
21 May
30 Jul
0 wk
25 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
22 May
2-4 wk
21 May
5 Jun
0 wk
21 May
26 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
1 Jun
1 wk after
25 May
1 wk after
Spinach
Spinacia oleracea
23 – 30 Apr
24 Jul
3-4 wk
21 May
14 Aug
0 wk
17 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
1 – 15 Apr
18 Apr
6-8 wk
27 May
30 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
26 May
2-4 wk
3 Jun
9 Jun
2 wk after
9 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
24 Jun
3-4 wk
21 May
15 Jul
0 wk
25 May
5 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
Fleece
22 Apr – 6 May
24 May
4-6 wk
3 Jun
21 Jun
2 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
20 May
8-10 wk
21 May
15 Jul
0 wk
25 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
25 May
13 Jul
1 wk after
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
3 Jun
6-8 wk
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Spearmint
Mentha spicata
26 Feb – 26 Mar
20 May
8-12 wk
21 May
15 Jul
0 wk
25 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
21 May
2 Aug
0 wk
11 Jun
23 Jul
3 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
5 May
8-10 wk
23 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
12 – 26 Mar
10 May
8-10 wk
21 May
5 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
25 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
25 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
14 Feb – 14 Mar
21 Mar
10-14 wk
23 May
30 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
Fleece
6 – 13 May
31 May
3-4 wk
3 Jun
21 Jun
2 wk after
Cornflower
Centaurea cyanus
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Statice
Limonium sinuatum
25 Mar – 8 Apr
19 Apr
8-10 wk
3 Jun
14 Jun
2 wk after
Sweet William
Dianthus barbatus
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
6 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
3 May
6-8 wk
3 Jun
14 Jun
2 wk after
3 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Apr
7 May
6-8 wk
1 Jun
18 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Apr – 28 May
21 May
4-8 wk
25 Jun
5 wk after
25 Jun
5 wk after
Foxglove
Digitalis purpurea
12 – 26 Mar
8-10 wk
21 May
0 wk
11 Jun
3 wk after
Busy lizzie
Impatiens walleriana
30 Mar – 27 Apr
11 Jun
8-12 wk
22 Jun
6 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
13 May
6-8 wk
3 Jun
24 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Apr – 6 May
24 Apr
4-6 wk
3 Jun
2 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Mar
8 Apr
8-10 wk
23 May
3 Jun
0 wk
Love in a mist
Nigella damascena
21 May
30 Jun
0 wk
25 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
23 Apr
6-8 wk
3 Jun
4 Jun
2 wk after
3 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
28 Feb – 28 Mar
8 Apr
8-12 wk
23 May
3 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
4 Mar – 1 Apr
21 Mar
8-12 wk
27 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
11 Mar – 8 Apr
16 Apr
8-12 wk
3 Jun
11 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Apr
30 Apr
6-8 wk
3 Jun
11 Jun
2 wk after
Corn poppy
Papaver rhoeas
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
10 May
8-12 wk
21 May
5 Jul
0 wk
6 Jun
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
13 – 27 Apr
29 Apr
8-10 wk
22 Jun
24 Jun
5 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
31 May
5-8 wk
21 May
5 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
3 Jun
6-8 wk
21 May
15 Jul
0 wk
11 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
4 May
6-8 wk
21 May
15 Jun
0 wk
11 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
9 May
4-6 wk
3 Jun
6 Jun
2 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
20 May
8-10 wk
21 May
15 Jul
0 wk
6 Jun
5 Jul
2 wk after
Petunia
Petunia
11 Mar – 8 Apr
19 Apr
8-12 wk
3 Jun
14 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Mar – 11 Apr
22 Apr
6-8 wk
23 May
3 Jun
0 wk
9 Jul
7 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
24 May
4-6 wk
3 Jun
21 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
29 Apr – 13 May
31 May
3-5 wk
3 Jun
21 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
22 Apr – 6 May
21 May
4-6 wk
3 Jun
18 Jun
2 wk after
9 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
30 Mar – 27 Apr
16 May
8-12 wk
22 Jun
11 Jul
5 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
20 Apr
8-12 wk
21 May
15 Jun
0 wk
25 Jun
5 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
4 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Safflower
Carthamus tinctorius
21 May
15 Jun
0 wk
25 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
3 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
7 Jun
4-6 wk
21 May
5 Jul
0 wk
11 Jun
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
11 – 25 Mar
20 Mar
10-12 wk
3 Jun
2 wk after
Sunflower
Helianthus annuus
6 – 13 May
29 May
3-4 wk
3 Jun
19 Jun
2 wk after
25 Jun
5 wk after
China aster
Callistephus chinensis
8 – 22 Apr
18 May
6-8 wk
3 Jun
29 Jun
2 wk after
9 Jul
7 wk after
Annual phlox
Phlox drummondii
1 – 15 Apr
13 May
6-8 wk
27 May
24 Jun
1 wk after
9 Jul
7 wk after
Hollyhock
Alcea rosea
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
20 Apr
8-12 wk
21 May
15 Jun
0 wk
25 Jun
5 wk after
African marigold
Tagetes erecta
8 – 22 Apr
13 May
6-8 wk
3 Jun
24 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
28 Mar – 11 Apr
8 May
6-8 wk
23 May
19 Jun
0 wk
9 Jul
7 wk after
Wood sage
Salvia nemorosa
12 – 26 Mar
10 Apr
8-10 wk
21 May
5 Jun
0 wk
25 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
25 Mar – 22 Apr
10 May
6-10 wk
3 Jun
21 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
21 May
9 Jul
0 wk
25 May
29 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
18 Apr
8-10 wk
3 Jun
13 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
4 May
6-8 wk
21 May
15 Jun
0 wk
11 Jun
3 wk after