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Method
Rel. frost
Last spring frost (0°C) 17 May Frost 3 of 4 years · 20 years of data
Frost-free season 111 days 17 May – 5 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)
29 Mar – 12 Apr
16 Jun
5-7 wk
17 May
21 Jul
0 wk
21 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
28 Jun
4-6 wk
17 May
26 Jul
0 wk
21 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
11 Jun
5-7 wk
17 May
16 Jul
0 wk
17 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
25 Apr – 2 May
30 May
3-4 wk
23 May
20 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
18 May
4-5 wk
18 Jun
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
15 Mar
8-12 wk
17 May
0 wk
7 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 May
30 May
1 wk after
21 May
1 wk after
Maize
Zea mays
Greenhouse
19 – 26 Apr
20 May
3-4 wk
17 May
10 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
25 Jun
3-4 wk
19 May
16 Jul
0 wk
7 Jun
6 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
6 Jul
0 wk
17 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
11 Jun
5-7 wk
17 May
16 Jul
0 wk
17 May
6 Jul
0 wk
Potato
Solanum tuberosum
21 Apr – 5 May
16 May
4-6 wk
2 Jun
13 Jun
2 wk after
2 Jun
3 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
21 Jun
5-7 wk
17 May
26 Jul
0 wk
21 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
2 – 9 May
4 Jun
3-4 wk
30 May
25 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
19 May
3-4 wk
19 May
9 Jun
0 wk
7 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
23 Jun
4-6 wk
17 May
21 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
10 Jul
3-4 wk
17 May
31 Jul
0 wk
21 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
23 Jun
4-6 wk
17 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
19 May
2-4 wk
17 May
2 Jun
0 wk
17 May
23 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 May
30 May
1 wk after
21 May
1 wk after
Spinach
Spinacia oleracea
19 – 26 Apr
25 Jul
3-4 wk
17 May
15 Aug
0 wk
13 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
18 Jun – 2 Jul
4-6 wk
30 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
22 Mar – 5 Apr
29 Apr
6-8 wk
17 May
10 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
25 Apr – 9 May
6 Jun
2-4 wk
23 May
20 Jun
1 wk after
21 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
23 Jun
4-6 wk
17 May
21 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
25 Jun
3-4 wk
17 May
16 Jul
0 wk
21 May
6 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
18 Apr – 2 May
13 May
4-6 wk
30 May
10 Jun
2 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
21 May
8-10 wk
17 May
16 Jul
0 wk
21 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
21 May
16 Jul
1 wk after
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
4 Jun
6-8 wk
17 May
16 Jul
0 wk
21 May
6 Jul
1 wk after
Spearmint
Mentha spicata
22 Feb – 22 Mar
21 May
8-12 wk
17 May
16 Jul
0 wk
21 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
17 May
5 Aug
0 wk
7 Jun
26 Jul
3 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
6 May
8-10 wk
19 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
11 May
8-10 wk
17 May
6 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
25 May
6-8 wk
17 May
6 Jul
0 wk
21 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
25 May
6-8 wk
17 May
6 Jul
0 wk
21 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
23 Mar
10-14 wk
19 May
1 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
Fleece
2 – 9 May
20 May
3-4 wk
30 May
10 Jun
2 wk after
Cornflower
Centaurea cyanus
17 May
16 Jul
0 wk
21 May
6 Jul
1 wk after
Statice
Limonium sinuatum
21 Mar – 4 Apr
17 Apr
8-10 wk
30 May
12 Jun
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
1 May
6-8 wk
30 May
12 Jun
2 wk after
30 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Apr – 24 May
18 May
4-8 wk
21 Jun
5 wk after
21 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
31 May
8-12 wk
18 Jun
26 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
11 May
6-8 wk
30 May
22 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
4-6 wk
30 May
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
11 Apr
8-10 wk
19 May
6 Jun
0 wk
Love in a mist
Nigella damascena
17 May
1 Jul
0 wk
21 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
28 Mar – 11 Apr
27 Apr
6-8 wk
23 May
8 Jun
1 wk after
15 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
11 Apr
8-12 wk
19 May
6 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
22 Feb – 22 Mar
22 Mar
8-12 wk
17 May
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
28 Feb – 28 Mar
20 Apr
8-12 wk
23 May
15 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
28 Mar – 11 Apr
4 May
6-8 wk
23 May
15 Jun
1 wk after
Corn poppy
Papaver rhoeas
17 May
16 Jul
0 wk
21 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
11 May
8-12 wk
17 May
6 Jul
0 wk
2 Jun
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
27 Apr
8-10 wk
18 Jun
22 Jun
5 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
1 Jun
5-8 wk
17 May
6 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
4 Jun
6-8 wk
17 May
16 Jul
0 wk
7 Jun
6 Jul
3 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
5 May
6-8 wk
17 May
16 Jun
0 wk
7 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
11 – 25 Apr
13 May
4-6 wk
23 May
10 Jun
1 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
21 May
8-10 wk
17 May
16 Jul
0 wk
2 Jun
6 Jul
2 wk after
Petunia
Petunia
7 Mar – 4 Apr
17 Apr
8-12 wk
30 May
12 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
25 Apr
6-8 wk
19 May
6 Jun
0 wk
5 Jul
7 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
13 May
4-6 wk
30 May
10 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
25 Apr – 9 May
20 May
3-5 wk
30 May
10 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
18 May
4-6 wk
30 May
15 Jun
2 wk after
5 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
26 Mar – 23 Apr
5 May
8-12 wk
18 Jun
30 Jun
5 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
21 Apr
8-12 wk
17 May
16 Jun
0 wk
21 Jun
5 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
5 Apr
6-8 wk
17 May
17 May
0 wk
7 Jun
3 wk after
Safflower
Carthamus tinctorius
17 May
16 Jun
0 wk
21 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
25 May
6-8 wk
17 May
6 Jul
0 wk
29 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
8 Jun
4-6 wk
17 May
6 Jul
0 wk
7 Jun
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
28 Feb – 14 Mar
25 Mar
10-12 wk
23 May
3 Jun
1 wk after
Sunflower
Helianthus annuus
2 – 9 May
31 May
3-4 wk
30 May
21 Jun
2 wk after
21 Jun
5 wk after
China aster
Callistephus chinensis
4 – 18 Apr
20 May
6-8 wk
30 May
1 Jul
2 wk after
5 Jul
7 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
11 May
6-8 wk
23 May
22 Jun
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
21 Apr
8-12 wk
17 May
16 Jun
0 wk
21 Jun
5 wk after
African marigold
Tagetes erecta
4 – 18 Apr
11 May
6-8 wk
30 May
22 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
10 May
6-8 wk
19 May
21 Jun
0 wk
5 Jul
7 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
11 Apr
8-10 wk
17 May
6 Jun
0 wk
21 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
21 Mar – 18 Apr
29 Apr
6-10 wk
30 May
10 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
17 May
16 Jul
0 wk
21 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
20 Apr
8-10 wk
30 May
15 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
5 May
6-8 wk
17 May
16 Jun
0 wk
7 Jun
3 wk after