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Method
Rel. frost
Last spring frost (0°C) 20 May Frost 3 of 4 years · 20 years of data
Frost-free season 112 days 20 May – 9 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)
1 – 15 Apr
15 Jun
5-7 wk
20 May
20 Jul
0 wk
24 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Apr
27 Jun
4-6 wk
20 May
25 Jul
0 wk
24 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
12 Mar – 9 Apr
1 Apr
8-12 wk
4 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Apr
10 Jun
5-7 wk
20 May
15 Jul
0 wk
20 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
19 – 26 May
26 May
3-4 wk
16 Jun
16 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
Fleece
12 – 19 May
27 May
4-5 wk
16 Jun
24 Jun
4 wk after
24 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 Jun
3-4 wk
7 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Feb – 25 Mar
20 Mar
8-12 wk
20 May
0 wk
10 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 May
4 Jun
1 wk after
24 May
25 May
1 wk after
Maize
Zea mays
Fleece
7 – 14 May
16 May
3-4 wk
4 Jun
6 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
23 Jun
3-4 wk
28 May
14 Jul
1 wk after
10 Jun
4 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 May
5 Jul
0 wk
20 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Apr
10 Jun
5-7 wk
20 May
15 Jul
0 wk
20 May
5 Jul
0 wk
Potato
Solanum tuberosum
24 Apr – 8 May
18 May
4-6 wk
5 Jun
15 Jun
2 wk after
5 Jun
5 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Apr
20 Jun
5-7 wk
20 May
25 Jul
0 wk
24 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
19 – 26 May
13 Jun
3-4 wk
16 Jun
4 Jul
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
30 Apr – 7 May
24 May
3-4 wk
28 May
14 Jun
1 wk after
10 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Apr
22 Jun
4-6 wk
20 May
20 Jul
0 wk
Lettuce
Lactuca sativa
22 – 29 Apr
9 Jul
3-4 wk
20 May
30 Jul
0 wk
24 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Apr
22 Jun
4-6 wk
20 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
22 Apr – 6 May
23 May
2-4 wk
20 May
6 Jun
0 wk
20 May
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 May
4 Jun
1 wk after
24 May
25 May
1 wk after
Spinach
Spinacia oleracea
22 – 29 Apr
24 Jul
3-4 wk
20 May
14 Aug
0 wk
16 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
9 – 23 Apr
25 Apr
6-8 wk
4 Jun
6 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
19 May – 2 Jun
2 Jun
2-4 wk
16 Jun
16 Jun
4 wk after
8 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Apr
22 Jun
4-6 wk
20 May
20 Jul
0 wk
Garden pea
Pisum sativum
22 – 29 Apr
24 Jun
3-4 wk
20 May
15 Jul
0 wk
24 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
5 – 19 May
22 May
4-6 wk
16 Jun
19 Jun
4 wk after
Lemon balm
Melissa officinalis
11 – 25 Mar
20 May
8-10 wk
20 May
15 Jul
0 wk
24 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
24 May
14 Jul
1 wk after
Wild chives
Allium schoenoprasum
25 Mar – 8 Apr
3 Jun
6-8 wk
20 May
15 Jul
0 wk
24 May
5 Jul
1 wk after
Spearmint
Mentha spicata
25 Feb – 25 Mar
20 May
8-12 wk
20 May
15 Jul
0 wk
24 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
20 May
3 Aug
0 wk
10 Jun
24 Jul
3 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
5 May
8-10 wk
28 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
11 – 25 Mar
10 May
8-10 wk
20 May
5 Jul
0 wk
Oregano
Origanum vulgare
25 Mar – 8 Apr
24 May
6-8 wk
20 May
5 Jul
0 wk
24 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
25 Mar – 8 Apr
24 May
6-8 wk
20 May
5 Jul
0 wk
24 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
19 Feb – 19 Mar
23 Mar
10-14 wk
28 May
1 Jun
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
19 – 26 May
29 May
3-4 wk
16 Jun
19 Jun
4 wk after
Cornflower
Centaurea cyanus
20 May
15 Jul
0 wk
24 May
5 Jul
1 wk after
Statice
Limonium sinuatum
7 – 21 Apr
20 Apr
8-10 wk
16 Jun
4 wk after
Sweet William
Dianthus barbatus
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
5 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
21 Apr – 5 May
4 May
6-8 wk
16 Jun
4 wk after
2 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
10 May
6-8 wk
8 Jun
21 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
29 Apr – 27 May
24 May
4-8 wk
24 Jun
5 wk after
24 Jun
5 wk after
Foxglove
Digitalis purpurea
11 – 25 Mar
8-10 wk
20 May
0 wk
10 Jun
3 wk after
Busy lizzie
Impatiens walleriana
9 Apr – 7 May
9 Jun
8-12 wk
2 Jul
4 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
21 Apr – 5 May
14 May
6-8 wk
16 Jun
25 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 May
4-6 wk
16 Jun
4 wk after
Chinese lantern
Physalis alkekengi
19 Mar – 2 Apr
9 Apr
8-10 wk
28 May
4 Jun
1 wk after
Love in a mist
Nigella damascena
20 May
30 Jun
0 wk
24 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
21 Apr – 5 May
24 Apr
6-8 wk
16 Jun
4 wk after
2 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
5 Mar – 2 Apr
9 Apr
8-12 wk
28 May
4 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
12 Mar – 9 Apr
21 Mar
8-12 wk
4 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
24 Mar – 21 Apr
14 Apr
8-12 wk
16 Jun
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
21 Apr – 5 May
28 Apr
6-8 wk
16 Jun
4 wk after
Corn poppy
Papaver rhoeas
20 May
15 Jul
0 wk
24 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
25 Feb – 25 Mar
10 May
8-12 wk
20 May
5 Jul
0 wk
5 Jun
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
7 – 21 Apr
7 May
8-10 wk
16 Jun
2 Jul
4 wk after
Sweet pea
Lathyrus odoratus
25 Mar – 15 Apr
31 May
5-8 wk
20 May
5 Jul
0 wk
Stock
Matthiola incana
25 Mar – 8 Apr
3 Jun
6-8 wk
20 May
15 Jul
0 wk
10 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
25 Mar – 8 Apr
4 May
6-8 wk
20 May
15 Jun
0 wk
10 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
23 Apr – 7 May
19 May
4-6 wk
4 Jun
16 Jun
2 wk after
Garden pansy
Viola × wittrockiana
11 – 25 Mar
20 May
8-10 wk
20 May
15 Jul
0 wk
5 Jun
5 Jul
2 wk after
Petunia
Petunia
24 Mar – 21 Apr
20 Apr
8-12 wk
16 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
2 – 16 Apr
23 Apr
6-8 wk
28 May
4 Jun
1 wk after
8 Jul
7 wk after
Common zinnia
Zinnia elegans
5 – 19 May
22 May
4-6 wk
16 Jun
19 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
12 – 26 May
29 May
3-5 wk
16 Jun
19 Jun
4 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 May
24 May
4-6 wk
16 Jun
21 Jun
4 wk after
8 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
9 Apr – 7 May
14 May
8-12 wk
2 Jul
9 Jul
6 wk after
Bee balm
Monarda didyma
25 Feb – 25 Mar
20 Apr
8-12 wk
20 May
15 Jun
0 wk
24 Jun
5 wk after
Yarrow
Achillea millefolium
25 Mar – 8 Apr
4 Apr
6-8 wk
20 May
0 wk
10 Jun
3 wk after
Safflower
Carthamus tinctorius
20 May
15 Jun
0 wk
24 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
25 Mar – 8 Apr
24 May
6-8 wk
20 May
5 Jul
0 wk
2 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
8 – 22 Apr
7 Jun
4-6 wk
20 May
5 Jul
0 wk
10 Jun
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
12 – 26 Mar
26 Mar
10-12 wk
4 Jun
4 Jun
2 wk after
Sunflower
Helianthus annuus
19 – 26 May
31 May
3-4 wk
16 Jun
21 Jun
4 wk after
24 Jun
5 wk after
China aster
Callistephus chinensis
21 Apr – 5 May
20 May
6-8 wk
16 Jun
1 Jul
4 wk after
8 Jul
7 wk after
Annual phlox
Phlox drummondii
9 – 23 Apr
14 May
6-8 wk
4 Jun
25 Jun
2 wk after
8 Jul
7 wk after
Hollyhock
Alcea rosea
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
10 Jun
3 wk after
Alpine delphinium
Delphinium elatum
25 Feb – 25 Mar
20 Apr
8-12 wk
20 May
15 Jun
0 wk
24 Jun
5 wk after
African marigold
Tagetes erecta
21 Apr – 5 May
14 May
6-8 wk
16 Jun
25 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
10 May
6-8 wk
28 May
21 Jun
1 wk after
8 Jul
7 wk after
Wood sage
Salvia nemorosa
11 – 25 Mar
10 Apr
8-10 wk
20 May
5 Jun
0 wk
24 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
7 Apr – 5 May
8 May
6-10 wk
16 Jun
19 Jun
4 wk after
California goldenpoppy
Eschscholzia californica
20 May
8 Jul
0 wk
24 May
28 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
7 – 21 Apr
21 Apr
8-10 wk
16 Jun
16 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
25 Mar – 8 Apr
4 May
6-8 wk
20 May
15 Jun
0 wk
10 Jun
3 wk after