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Method
Rel. frost
Last spring frost (0°C) 17 May Frost 1 of 4 years · 20 years of data
Frost-free season 136 days 17 May – 30 Sep
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)
29 Mar – 12 Apr
15 Jun
5-7 wk
17 May
20 Jul
0 wk
21 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
27 Jun
4-6 wk
17 May
25 Jul
0 wk
21 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
7 Mar – 4 Apr
8 Apr
8-12 wk
30 May
3 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
10 Jun
5-7 wk
17 May
15 Jul
0 wk
17 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
21 – 28 May
2 Jun
3-4 wk
18 Jun
23 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
7 Jun
4-5 wk
18 Jun
5 Jul
5 wk after
5 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
28 May – 4 Jun
3-4 wk
25 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Feb – 22 Mar
31 Mar
8-12 wk
17 May
26 May
0 wk
7 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 May
15 Jun
1 wk after
21 May
5 Jun
1 wk after
Maize
Zea mays
2 – 9 May
23 May
3-4 wk
30 May
13 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
4 Jul
3-4 wk
19 May
25 Jul
0 wk
7 Jun
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
5 Jul
0 wk
17 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
10 Jun
5-7 wk
17 May
15 Jul
0 wk
17 May
5 Jul
0 wk
Potato
Solanum tuberosum
21 Apr – 5 May
5 Jun
4-6 wk
2 Jun
3 Jul
2 wk after
2 Jun
23 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
20 Jun
5-7 wk
17 May
25 Jul
0 wk
21 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
21 – 28 May
20 Jun
3-4 wk
18 Jun
11 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
17 Jun
3-4 wk
19 May
8 Jul
0 wk
7 Jun
28 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
22 Jun
4-6 wk
17 May
20 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
9 Jul
3-4 wk
17 May
30 Jul
0 wk
21 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
22 Jun
4-6 wk
17 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
1 Jun
2-4 wk
17 May
15 Jun
0 wk
17 May
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 May
15 Jun
1 wk after
21 May
5 Jun
1 wk after
Spinach
Spinacia oleracea
19 – 26 Apr
24 Jul
3-4 wk
17 May
14 Aug
0 wk
13 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
18 Jun – 2 Jul
4-6 wk
30 Jul
11 wk after
Garden tomato
Solanum lycopersicum
4 – 18 Apr
2 May
6-8 wk
30 May
13 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
22 Jun
2-4 wk
30 May
6 Jul
2 wk after
5 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
22 Jun
4-6 wk
17 May
20 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
24 Jun
3-4 wk
17 May
15 Jul
0 wk
21 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
7 – 21 May
29 May
4-6 wk
18 Jun
26 Jun
5 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
20 May
8-10 wk
17 May
15 Jul
0 wk
21 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
21 May
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
3 Jun
6-8 wk
17 May
15 Jul
0 wk
21 May
5 Jul
1 wk after
Spearmint
Mentha spicata
22 Feb – 22 Mar
20 May
8-12 wk
17 May
15 Jul
0 wk
21 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
17 May
14 Aug
0 wk
7 Jun
4 Aug
3 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
5 May
8-10 wk
19 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
10 May
8-10 wk
17 May
5 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
24 May
6-8 wk
17 May
5 Jul
0 wk
21 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
24 May
6-8 wk
17 May
5 Jul
0 wk
21 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
6 Apr
10-14 wk
19 May
15 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
21 – 28 May
5 Jun
3-4 wk
18 Jun
26 Jun
5 wk after
Cornflower
Centaurea cyanus
17 May
15 Jul
0 wk
21 May
5 Jul
1 wk after
Statice
Limonium sinuatum
21 Mar – 4 Apr
7 May
8-10 wk
30 May
2 Jul
2 wk after
Sweet William
Dianthus barbatus
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
2 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
21 May
6-8 wk
30 May
2 Jul
2 wk after
30 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Apr – 24 May
7 Jun
4-8 wk
21 Jun
5 Jul
5 wk after
21 Jun
25 Jun
5 wk after
Foxglove
Digitalis purpurea
8 – 22 Mar
8-10 wk
17 May
0 wk
7 Jun
3 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
24 Jun
8-12 wk
18 Jun
19 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
31 May
6-8 wk
30 May
12 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
18 Apr – 2 May
7 May
4-6 wk
30 May
4 Jun
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
20 Apr
8-10 wk
19 May
15 Jun
0 wk
Love in a mist
Nigella damascena
17 May
30 Jun
0 wk
21 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
4 – 18 Apr
11 May
6-8 wk
30 May
22 Jun
2 wk after
30 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
20 Apr
8-12 wk
19 May
15 Jun
0 wk
Cardoon
Cynara cardunculus
7 Mar – 4 Apr
21 Mar
8-12 wk
30 May
2 wk after
Regal-foxtail
Ptilotus nobilis
26 Mar – 23 Apr
21 Apr
8-12 wk
18 Jun
5 wk after
Globe amaranth
Gomphrena globosa
23 Apr – 7 May
5 May
6-8 wk
18 Jun
5 wk after
Corn poppy
Papaver rhoeas
17 May
15 Jul
0 wk
21 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
10 May
8-12 wk
17 May
5 Jul
0 wk
2 Jun
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
17 May
8-10 wk
18 Jun
12 Jul
5 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
31 May
5-8 wk
17 May
5 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
3 Jun
6-8 wk
17 May
15 Jul
0 wk
7 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
4 May
6-8 wk
17 May
15 Jun
0 wk
7 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
7 – 21 May
14 May
4-6 wk
18 Jun
5 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
20 May
8-10 wk
17 May
15 Jul
0 wk
2 Jun
5 Jul
2 wk after
Petunia
Petunia
7 Mar – 4 Apr
7 May
8-12 wk
30 May
2 Jul
2 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
4 May
6-8 wk
19 May
15 Jun
0 wk
5 Jul
7 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
6 Jun
4-6 wk
30 May
4 Jul
2 wk after
Common morning glory
Ipomoea purpurea
14 – 28 May
5 Jun
3-5 wk
18 Jun
26 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
7 Jun
4-6 wk
30 May
5 Jul
2 wk after
5 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
16 Apr – 14 May
21 May
8-12 wk
9 Jul
16 Jul
8 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
20 Apr
8-12 wk
17 May
15 Jun
0 wk
21 Jun
5 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
4 Apr
6-8 wk
17 May
0 wk
7 Jun
3 wk after
Safflower
Carthamus tinctorius
17 May
15 Jun
0 wk
21 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
24 May
6-8 wk
17 May
5 Jul
0 wk
29 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
7 Jun
4-6 wk
17 May
5 Jul
0 wk
7 Jun
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
7 – 21 Mar
6 Apr
10-12 wk
30 May
15 Jun
2 wk after
Sunflower
Helianthus annuus
2 – 9 May
14 Jun
3-4 wk
30 May
5 Jul
2 wk after
21 Jun
25 Jun
5 wk after
China aster
Callistephus chinensis
4 – 18 Apr
3 Jun
6-8 wk
30 May
15 Jul
2 wk after
5 Jul
5 Jul
7 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
31 May
6-8 wk
23 May
12 Jul
1 wk after
5 Jul
7 wk after
Hollyhock
Alcea rosea
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
7 Jun
3 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
20 Apr
8-12 wk
17 May
15 Jun
0 wk
21 Jun
5 wk after
African marigold
Tagetes erecta
4 – 18 Apr
31 May
6-8 wk
30 May
12 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
24 May
6-8 wk
19 May
5 Jul
0 wk
5 Jul
7 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
10 Apr
8-10 wk
17 May
5 Jun
0 wk
21 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
9 Apr – 7 May
15 May
6-10 wk
18 Jun
26 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
17 May
15 Jul
0 wk
21 May
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
10 May
8-10 wk
30 May
5 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
4 May
6-8 wk
17 May
15 Jun
0 wk
7 Jun
3 wk after