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Method
Rel. frost
Last spring frost (0°C) 14 May Frost 3 of 4 years · 20 years of data
Frost-free season 106 days 14 May – 28 Aug
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)
26 Mar – 9 Apr
12 Jun
5-7 wk
14 May
17 Jul
0 wk
15 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
2 – 16 Apr
24 Jun
4-6 wk
14 May
22 Jul
0 wk
15 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
1 – 29 Mar
24 Mar
8-12 wk
24 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
26 Mar – 9 Apr
7 Jun
5-7 wk
14 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
6 – 13 May
18 May
3-4 wk
3 Jun
8 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 Apr – 6 May
21 May
4-5 wk
3 Jun
18 Jun
3 wk after
8 Jun
8 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Feb – 19 Mar
16 Mar
8-12 wk
14 May
0 wk
27 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
15 May
31 May
0 wk
15 May
21 May
0 wk
Maize
Zea mays
Fleece
26 Apr – 3 May
8 May
3-4 wk
24 May
29 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
17 Jun
3-4 wk
19 May
8 Jul
1 wk after
27 May
28 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 May
27 Jun
0 wk
14 May
17 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
26 Mar – 9 Apr
7 Jun
5-7 wk
14 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Potato
Solanum tuberosum
12 – 26 Apr
11 May
4-6 wk
24 May
8 Jun
1 wk after
24 May
29 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
26 Mar – 9 Apr
12 Jun
5-7 wk
14 May
17 Jul
0 wk
15 May
7 Jul
0 wk
Pumpkin
Cucurbita pepo
22 – 29 May
23 May
3-4 wk
19 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
22 May
3-4 wk
19 May
12 Jun
1 wk after
27 May
2 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
2 – 16 Apr
19 Jun
4-6 wk
14 May
17 Jul
0 wk
Lettuce
Lactuca sativa
16 – 23 Apr
1 Jul
3-4 wk
14 May
22 Jul
0 wk
15 May
12 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
2 – 16 Apr
19 Jun
4-6 wk
14 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
16 – 30 Apr
20 May
2-4 wk
14 May
3 Jun
0 wk
14 May
24 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
15 May
31 May
0 wk
15 May
21 May
0 wk
Spinach
Spinacia oleracea
16 – 23 Apr
21 Jul
3-4 wk
14 May
11 Aug
0 wk
11 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
29 Mar – 12 Apr
17 Apr
6-8 wk
24 May
29 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
25 May
2-4 wk
3 Jun
8 Jun
3 wk after
26 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
2 – 16 Apr
19 Jun
4-6 wk
14 May
17 Jul
0 wk
Garden pea
Pisum sativum
16 – 23 Apr
16 Jun
3-4 wk
14 May
7 Jul
0 wk
15 May
27 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
22 Apr – 6 May
13 May
4-6 wk
3 Jun
10 Jun
3 wk after
Lemon balm
Melissa officinalis
5 – 19 Mar
12 May
8-10 wk
14 May
7 Jul
0 wk
8 Jun
27 Jun
4 wk after
Dill
Anethum graveolens
15 May
8 Jul
0 wk
Wild chives
Allium schoenoprasum
19 Mar – 2 Apr
31 May
6-8 wk
14 May
12 Jul
0 wk
15 May
2 Jul
0 wk
Spearmint
Mentha spicata
19 Feb – 19 Mar
17 May
8-12 wk
14 May
12 Jul
0 wk
8 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
14 May
28 Jul
0 wk
27 May
18 Jul
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
2 May
8-10 wk
19 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
5 – 19 Mar
7 May
8-10 wk
14 May
2 Jul
0 wk
Oregano
Origanum vulgare
19 Mar – 2 Apr
21 May
6-8 wk
14 May
2 Jul
0 wk
8 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
19 Mar – 2 Apr
21 May
6-8 wk
14 May
2 Jul
0 wk
15 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
14 Mar
10-14 wk
19 May
23 May
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
Fleece
6 – 13 May
20 May
3-4 wk
3 Jun
10 Jun
3 wk after
Cornflower
Centaurea cyanus
14 May
12 Jul
0 wk
15 May
2 Jul
0 wk
Statice
Limonium sinuatum
25 Mar – 8 Apr
11 Apr
8-10 wk
3 Jun
6 Jun
3 wk after
Sweet William
Dianthus barbatus
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
24 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
25 Apr
6-8 wk
3 Jun
6 Jun
3 wk after
20 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
1 – 15 Apr
3 May
6-8 wk
27 May
14 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
13 Apr – 11 May
17 May
4-8 wk
8 Jun
14 Jun
4 wk after
8 Jun
4 wk after
Foxglove
Digitalis purpurea
5 – 19 Mar
8-10 wk
14 May
0 wk
27 May
2 wk after
Busy lizzie
Impatiens walleriana
27 Mar – 24 Apr
31 May
8-12 wk
19 Jun
26 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
5 May
6-8 wk
3 Jun
16 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
3 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
3 Apr
8-10 wk
19 May
29 May
1 wk after
Love in a mist
Nigella damascena
14 May
22 Jun
0 wk
15 May
12 Jun
0 wk
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
15 Apr
6-8 wk
3 Jun
3 wk after
20 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
3 Apr
8-12 wk
19 May
29 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
21 Feb – 21 Mar
18 Mar
8-12 wk
16 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
11 Mar – 8 Apr
5 Apr
8-12 wk
3 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Apr
19 Apr
6-8 wk
3 Jun
3 wk after
Corn poppy
Papaver rhoeas
14 May
7 Jul
0 wk
15 May
27 Jun
0 wk
Snapdragon
Antirrhinum majus
19 Feb – 19 Mar
2 May
8-12 wk
14 May
27 Jun
0 wk
24 May
17 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Apr
21 Apr
8-10 wk
19 Jun
5 wk after
Sweet pea
Lathyrus odoratus
19 Mar – 9 Apr
28 May
5-8 wk
14 May
2 Jul
0 wk
Stock
Matthiola incana
19 Mar – 2 Apr
26 May
6-8 wk
14 May
7 Jul
0 wk
27 May
27 Jun
2 wk after
Wormwood
Artemisia absinthium
19 Mar – 2 Apr
1 May
6-8 wk
14 May
12 Jun
0 wk
27 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
28 Apr
4-6 wk
3 Jun
3 wk after
Garden pansy
Viola × wittrockiana
5 – 19 Mar
17 May
8-10 wk
14 May
12 Jul
0 wk
24 May
2 Jul
1 wk after
Petunia
Petunia
11 Mar – 8 Apr
11 Apr
8-12 wk
3 Jun
6 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
17 Apr
6-8 wk
19 May
29 May
1 wk after
26 Jun
6 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
13 May
4-6 wk
3 Jun
10 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
29 Apr – 13 May
20 May
3-5 wk
3 Jun
10 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
22 Apr – 6 May
17 May
4-6 wk
3 Jun
14 Jun
3 wk after
26 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
27 Mar – 24 Apr
5 May
8-12 wk
19 Jun
30 Jun
5 wk after
Bee balm
Monarda didyma
19 Feb – 19 Mar
12 Apr
8-12 wk
14 May
7 Jun
0 wk
8 Jun
4 wk after
Yarrow
Achillea millefolium
19 Mar – 2 Apr
1 Apr
6-8 wk
14 May
0 wk
27 May
2 wk after
Safflower
Carthamus tinctorius
14 May
12 Jun
0 wk
15 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
19 Mar – 2 Apr
21 May
6-8 wk
14 May
2 Jul
0 wk
28 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
2 – 16 Apr
30 May
4-6 wk
14 May
27 Jun
0 wk
27 May
17 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
11 – 25 Mar
16 Mar
10-12 wk
3 Jun
3 wk after
Sunflower
Helianthus annuus
6 – 13 May
22 May
3-4 wk
3 Jun
12 Jun
3 wk after
8 Jun
4 wk after
China aster
Callistephus chinensis
8 – 22 Apr
11 May
6-8 wk
3 Jun
22 Jun
3 wk after
26 Jun
6 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
5 May
6-8 wk
24 May
16 Jun
1 wk after
26 Jun
6 wk after
Hollyhock
Alcea rosea
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
27 May
2 wk after
Alpine delphinium
Delphinium elatum
19 Feb – 19 Mar
12 Apr
8-12 wk
14 May
7 Jun
0 wk
8 Jun
4 wk after
African marigold
Tagetes erecta
8 – 22 Apr
5 May
6-8 wk
3 Jun
16 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
1 May
6-8 wk
19 May
12 Jun
1 wk after
26 Jun
6 wk after
Wood sage
Salvia nemorosa
5 – 19 Mar
2 Apr
8-10 wk
14 May
28 May
0 wk
8 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
25 Mar – 22 Apr
29 Apr
6-10 wk
3 Jun
10 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
14 May
5 Jul
0 wk
15 May
25 Jun
0 wk
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
1 Apr
8-10 wk
3 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
19 Mar – 2 Apr
1 May
6-8 wk
14 May
12 Jun
0 wk
27 May
2 Jun
2 wk after