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Method
Rel. frost
Last spring frost (0°C) 6 May Frost 9 of 10 years · 20 years of data
Frost-free season 124 days 6 May – 7 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)
18 Mar – 1 Apr
14 Jun
5-7 wk
6 May
19 Jul
0 wk
10 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
26 Jun
4-6 wk
6 May
24 Jul
0 wk
10 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Mar – 1 Apr
9 Jun
5-7 wk
6 May
14 Jul
0 wk
6 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
23 – 30 Apr
3-4 wk
21 May
2 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
17 May
4-5 wk
18 Jun
6 wk after
24 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
22 Mar
8-12 wk
6 May
17 May
0 wk
27 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
6 Jun
1 wk after
10 May
27 May
1 wk after
Maize
Zea mays
Season too short
9 – 16 Apr
3-4 wk
7 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
24 Jun
3-4 wk
14 May
15 Jul
1 wk after
27 May
5 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
4 Jul
0 wk
6 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
9 Jun
5-7 wk
6 May
14 Jul
0 wk
6 May
4 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
16 May
4-6 wk
22 May
13 Jun
2 wk after
22 May
3 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
19 Jun
5-7 wk
6 May
24 Jul
0 wk
10 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
23 – 30 Apr
24 Apr
3-4 wk
21 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Apr
24 May
3-4 wk
14 May
14 Jun
1 wk after
27 May
4 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
21 Jun
4-6 wk
6 May
19 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
8 Jul
3-4 wk
6 May
29 Jul
0 wk
10 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
21 Jun
4-6 wk
6 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
25 May
2-4 wk
6 May
8 Jun
0 wk
6 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
6 Jun
1 wk after
10 May
27 May
1 wk after
Spinach
Spinacia oleracea
8 – 15 Apr
23 Jul
3-4 wk
6 May
13 Aug
0 wk
2 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
12 – 26 Mar
6-8 wk
7 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
9 – 23 Apr
26 Apr
2-4 wk
7 May
10 May
0 wk
27 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
21 Jun
4-6 wk
6 May
19 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
23 Jun
3-4 wk
6 May
14 Jul
0 wk
10 May
4 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
Season too short
9 – 23 Apr
4-6 wk
21 May
2 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
19 May
8-10 wk
6 May
14 Jul
0 wk
10 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
10 May
15 Jul
1 wk after
Wild chives
Allium schoenoprasum
11 – 25 Mar
2 Jun
6-8 wk
6 May
14 Jul
0 wk
10 May
4 Jul
1 wk after
Spearmint
Mentha spicata
11 Feb – 11 Mar
19 May
8-12 wk
6 May
14 Jul
0 wk
10 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
6 May
4 Aug
0 wk
27 May
25 Jul
3 wk after
Garden sage
Salvia officinalis
5 – 19 Mar
4 May
8-10 wk
14 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
9 May
8-10 wk
6 May
4 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
23 May
6-8 wk
6 May
4 Jul
0 wk
10 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
23 May
6-8 wk
6 May
4 Jul
0 wk
10 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
24 Mar
10-14 wk
14 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
Season too short
23 – 30 Apr
3-4 wk
21 May
2 wk after
Cornflower
Centaurea cyanus
6 May
14 Jul
0 wk
10 May
4 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
26 Feb – 12 Mar
31 Mar
8-10 wk
7 May
26 May
0 wk
Sweet William
Dianthus barbatus
11 – 25 Mar
6-8 wk
6 May
0 wk
22 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
12 – 26 Mar
14 Apr
6-8 wk
7 May
26 May
0 wk
16 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
19 Mar – 2 Apr
14 Apr
6-8 wk
14 May
26 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
1 – 29 Apr
28 Apr
4-8 wk
27 May
3 wk after
27 May
3 wk after
Foxglove
Digitalis purpurea
25 Feb – 11 Mar
8-10 wk
6 May
0 wk
27 May
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
10 Mar – 7 Apr
20 Apr
8-12 wk
2 Jun
15 Jun
4 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
26 Mar – 9 Apr
10 Apr
6-8 wk
21 May
22 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
21 Apr – 5 May
4-6 wk
2 Jun
4 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
10 Apr
8-10 wk
14 May
5 Jun
1 wk after
Love in a mist
Nigella damascena
6 May
29 Jun
0 wk
10 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
12 – 26 Mar
4 Apr
6-8 wk
7 May
16 May
0 wk
16 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
19 Feb – 19 Mar
10 Apr
8-12 wk
14 May
5 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
12 Feb – 12 Mar
20 Mar
8-12 wk
7 May
15 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
2 wk after
Corn poppy
Papaver rhoeas
6 May
14 Jul
0 wk
10 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
9 May
8-12 wk
6 May
4 Jul
0 wk
22 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
10 Apr
8-10 wk
21 May
5 Jun
2 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
30 May
5-8 wk
6 May
4 Jul
0 wk
Stock
Matthiola incana
11 – 25 Mar
2 Jun
6-8 wk
6 May
14 Jul
0 wk
27 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
3 May
6-8 wk
6 May
14 Jun
0 wk
27 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
9 – 23 Apr
4-6 wk
21 May
2 wk after
Garden pansy
Viola × wittrockiana
25 Feb – 11 Mar
19 May
8-10 wk
6 May
14 Jul
0 wk
22 May
4 Jul
2 wk after
Petunia
Petunia
Greenhouse
12 Feb – 12 Mar
31 Mar
8-12 wk
7 May
26 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
24 Apr
6-8 wk
14 May
5 Jun
1 wk after
24 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
26 Mar – 9 Apr
8 May
4-6 wk
7 May
5 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
16 – 30 Apr
3-5 wk
21 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
9 – 23 Apr
28 Apr
4-6 wk
21 May
26 May
2 wk after
10 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
10 Mar – 7 Apr
25 Mar
8-12 wk
2 Jun
4 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
19 Apr
8-12 wk
6 May
14 Jun
0 wk
10 Jun
5 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
3 Apr
6-8 wk
6 May
15 May
0 wk
27 May
3 wk after
Safflower
Carthamus tinctorius
6 May
14 Jun
0 wk
10 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
23 May
6-8 wk
6 May
4 Jul
0 wk
18 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
6 Jun
4-6 wk
6 May
4 Jul
0 wk
27 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
26 Feb – 12 Mar
10-12 wk
21 May
2 wk after
Sunflower
Helianthus annuus
5 – 12 May
1 Jun
3-4 wk
2 Jun
22 Jun
4 wk after
10 Jun
12 Jun
5 wk after
China aster
Callistephus chinensis
7 – 21 Apr
21 May
6-8 wk
2 Jun
2 Jul
4 wk after
24 Jun
7 wk after
Annual phlox
Phlox drummondii
Fleece
12 – 26 Mar
10 Apr
6-8 wk
7 May
22 May
0 wk
10 Jun
5 wk after
Hollyhock
Alcea rosea
11 – 25 Mar
6-8 wk
6 May
0 wk
27 May
3 wk after
Alpine delphinium
Delphinium elatum
11 Feb – 11 Mar
19 Apr
8-12 wk
6 May
14 Jun
0 wk
10 Jun
5 wk after
African marigold
Tagetes erecta
Fleece
26 Mar – 9 Apr
10 Apr
6-8 wk
21 May
22 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
11 May
6-8 wk
14 May
22 Jun
1 wk after
24 Jun
7 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
9 Apr
8-10 wk
6 May
4 Jun
0 wk
10 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
12 Mar – 9 Apr
19 Mar
6-10 wk
21 May
2 wk after
California goldenpoppy
Eschscholzia californica
6 May
10 Jul
0 wk
10 May
30 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
19 Apr
8-10 wk
2 Jun
14 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Mar
3 May
6-8 wk
6 May
14 Jun
0 wk
27 May
4 Jun
3 wk after