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Method
Rel. frost
Last spring frost (0°C) 1 May Frost 9 of 10 years · 20 years of data
Frost-free season 135 days 1 May – 13 Sep
Probability that frost is over

10% = 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)
13 – 27 Mar
19 Jun
5-7 wk
1 May
24 Jul
0 wk
25 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
20 Mar – 3 Apr
1 Jul
4-6 wk
1 May
29 Jul
0 wk
25 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
19 Feb – 19 Mar
8-12 wk
14 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
13 – 27 Mar
14 Jun
5-7 wk
1 May
19 Jul
0 wk
18 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
16 – 23 Apr
3-4 wk
14 May
2 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 May
21 May
4-5 wk
6 Jun
18 Jun
5 wk after
11 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
19 – 26 May
3-4 wk
16 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
6 Feb – 6 Mar
1 Apr
8-12 wk
1 May
27 May
0 wk
14 May
17 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 Apr
16 Jun
1 wk before
25 Apr
6 Jun
1 wk before
Maize
Zea mays
Season too short
3 – 10 Apr
3-4 wk
1 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
1 Jul
3-4 wk
8 May
22 Jul
1 wk after
14 May
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 May
9 Jul
0 wk
18 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
13 – 27 Mar
14 Jun
5-7 wk
1 May
19 Jul
0 wk
18 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
25 Mar – 8 Apr
28 May
4-6 wk
6 May
25 Jun
1 wk after
6 May
15 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
13 – 27 Mar
24 Jun
5-7 wk
1 May
29 Jul
0 wk
25 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
16 – 23 Apr
3 May
3-4 wk
14 May
24 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
8 Jun
3-4 wk
8 May
29 Jun
1 wk after
14 May
19 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Mar – 3 Apr
26 Jun
4-6 wk
1 May
24 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 Apr
13 Jul
3-4 wk
1 May
3 Aug
0 wk
25 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Mar – 3 Apr
26 Jun
4-6 wk
1 May
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Mar – 4 Apr
3 Jun
2-4 wk
18 Apr
17 Jun
2 wk before
18 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 Apr
16 Jun
1 wk before
25 Apr
6 Jun
1 wk before
Spinach
Spinacia oleracea
3 – 10 Apr
28 Jul
3-4 wk
1 May
18 Aug
0 wk
11 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
6 – 20 Mar
6-8 wk
1 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
3 – 17 Apr
5 May
2-4 wk
1 May
19 May
0 wk
14 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Mar – 3 Apr
26 Jun
4-6 wk
1 May
24 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 Apr
28 Jun
3-4 wk
1 May
19 Jul
0 wk
25 Apr
9 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Greenhouse
2 – 16 Apr
11 Apr
4-6 wk
14 May
2 wk after
Lemon balm
Melissa officinalis
20 Feb – 6 Mar
24 May
8-10 wk
1 May
19 Jul
0 wk
27 May
9 Jul
4 wk after
Dill
Anethum graveolens
25 Apr
22 Jul
1 wk before
Wild chives
Allium schoenoprasum
6 – 20 Mar
7 Jun
6-8 wk
1 May
19 Jul
0 wk
25 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
6 Feb – 6 Mar
24 May
8-12 wk
1 May
19 Jul
0 wk
27 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
1 May
11 Aug
0 wk
14 May
1 Aug
2 wk after
Garden sage
Salvia officinalis
27 Feb – 13 Mar
9 May
8-10 wk
8 May
4 Jul
1 wk after
Common thyme
Thymus vulgaris
20 Feb – 6 Mar
14 May
8-10 wk
1 May
9 Jul
0 wk
Oregano
Origanum vulgare
6 – 20 Mar
28 May
6-8 wk
1 May
9 Jul
0 wk
27 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
6 – 20 Mar
28 May
6-8 wk
1 May
9 Jul
0 wk
25 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
30 Jan – 27 Feb
24 Mar
10-14 wk
8 May
2 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
Greenhouse
16 – 23 Apr
18 Apr
3-4 wk
14 May
2 wk after
Cornflower
Centaurea cyanus
1 May
19 Jul
0 wk
25 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
5 – 19 Mar
28 Mar
8-10 wk
14 May
23 May
2 wk after
Sweet William
Dianthus barbatus
6 – 20 Mar
6-8 wk
1 May
0 wk
6 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
19 Mar – 2 Apr
11 Apr
6-8 wk
14 May
23 May
2 wk after
16 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
13 – 27 Mar
11 Apr
6-8 wk
8 May
23 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
19 Mar – 16 Apr
25 Apr
4-8 wk
14 May
23 May
2 wk after
14 May
2 wk after
Foxglove
Digitalis purpurea
20 Feb – 6 Mar
8-10 wk
1 May
0 wk
14 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
28 Feb – 28 Mar
29 Apr
8-12 wk
23 May
24 Jun
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
19 Mar – 2 Apr
21 Apr
6-8 wk
14 May
2 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
11 – 25 Apr
4-6 wk
23 May
3 wk after
Chinese lantern
Physalis alkekengi
27 Feb – 13 Mar
17 Apr
8-10 wk
8 May
12 Jun
1 wk after
Love in a mist
Nigella damascena
1 May
4 Jul
0 wk
25 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
19 Mar – 2 Apr
1 Apr
6-8 wk
14 May
2 wk after
16 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
13 Feb – 13 Mar
17 Apr
8-12 wk
8 May
12 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
19 Feb – 19 Mar
25 Mar
8-12 wk
14 May
20 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
19 Feb – 19 Mar
4 Mar
8-12 wk
14 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
2 wk after
Corn poppy
Papaver rhoeas
1 May
19 Jul
0 wk
25 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
6 Feb – 6 Mar
14 May
8-12 wk
1 May
9 Jul
0 wk
6 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
14 – 28 Mar
7 Apr
8-10 wk
23 May
2 Jun
3 wk after
Sweet pea
Lathyrus odoratus
6 – 27 Mar
4 Jun
5-8 wk
1 May
9 Jul
0 wk
Stock
Matthiola incana
6 – 20 Mar
7 Jun
6-8 wk
1 May
19 Jul
0 wk
14 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
6 – 20 Mar
8 May
6-8 wk
1 May
19 Jun
0 wk
14 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
2 – 16 Apr
4-6 wk
14 May
2 wk after
Garden pansy
Viola × wittrockiana
20 Feb – 6 Mar
24 May
8-10 wk
1 May
19 Jul
0 wk
6 May
9 Jul
1 wk after
Petunia
Petunia
Fleece
19 Feb – 19 Mar
28 Mar
8-12 wk
14 May
23 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
13 – 27 Mar
1 May
6-8 wk
8 May
12 Jun
1 wk after
11 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
2 – 16 Apr
11 Apr
4-6 wk
14 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
9 – 23 Apr
18 Apr
3-5 wk
14 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
2 – 16 Apr
25 Apr
4-6 wk
14 May
23 May
2 wk after
27 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
28 Feb – 28 Mar
3 Apr
8-12 wk
23 May
29 May
3 wk after
Bee balm
Monarda didyma
6 Feb – 6 Mar
24 Apr
8-12 wk
1 May
19 Jun
0 wk
27 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
6 – 20 Mar
8 Apr
6-8 wk
1 May
20 May
0 wk
14 May
2 wk after
Safflower
Carthamus tinctorius
1 May
19 Jun
0 wk
25 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
6 – 20 Mar
28 May
6-8 wk
1 May
9 Jul
0 wk
16 Mar
29 Jun
7 wk before
Bishop's flower
Ammi majus
20 Mar – 3 Apr
11 Jun
4-6 wk
1 May
9 Jul
0 wk
14 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
19 Feb – 5 Mar
22 Feb
10-12 wk
14 May
2 wk after
Sunflower
Helianthus annuus
25 Apr – 2 May
1 Jun
3-4 wk
23 May
22 Jun
3 wk after
27 May
12 Jun
4 wk after
China aster
Callistephus chinensis
28 Mar – 11 Apr
21 May
6-8 wk
23 May
2 Jul
3 wk after
11 Jun
22 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
6 – 20 Mar
21 Apr
6-8 wk
1 May
2 Jun
0 wk
27 May
4 wk after
Hollyhock
Alcea rosea
6 – 20 Mar
6-8 wk
1 May
0 wk
14 May
2 wk after
Alpine delphinium
Delphinium elatum
6 Feb – 6 Mar
24 Apr
8-12 wk
1 May
19 Jun
0 wk
27 May
9 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
19 Mar – 2 Apr
21 Apr
6-8 wk
14 May
2 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Mar
11 May
6-8 wk
8 May
22 Jun
1 wk after
11 Jun
12 Jun
6 wk after
Wood sage
Salvia nemorosa
20 Feb – 6 Mar
14 Apr
8-10 wk
1 May
9 Jun
0 wk
27 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
5 Mar – 2 Apr
28 Mar
6-10 wk
14 May
2 wk after
California goldenpoppy
Eschscholzia californica
1 May
19 Jul
0 wk
25 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
14 – 28 Mar
23 Apr
8-10 wk
23 May
18 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
6 – 20 Mar
8 May
6-8 wk
1 May
19 Jun
0 wk
14 May
9 Jun
2 wk after