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Method
Rel. frost
Last spring frost (0°C) 6 May Frost 3 of 4 years · 20 years of data
Frost-free season 138 days 6 May – 21 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)
18 Mar – 1 Apr
16 Jun
5-7 wk
6 May
21 Jul
0 wk
10 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
28 Jun
4-6 wk
6 May
26 Jul
0 wk
10 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
21 Feb – 21 Mar
14 Apr
8-12 wk
16 May
9 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Mar – 1 Apr
11 Jun
5-7 wk
6 May
16 Jul
0 wk
6 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
14 – 21 May
16 May
3-4 wk
11 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
7 – 14 May
27 May
4-5 wk
11 Jun
24 Jun
5 wk after
24 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
19 – 26 May
3-4 wk
16 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
26 Mar
8-12 wk
6 May
21 May
0 wk
27 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
10 Jun
1 wk after
10 May
31 May
1 wk after
Maize
Zea mays
Fleece
18 – 25 Apr
29 May
3-4 wk
16 May
19 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
28 Jun
3-4 wk
11 May
19 Jul
1 wk after
27 May
9 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
6 Jul
0 wk
6 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
11 Jun
5-7 wk
6 May
16 Jul
0 wk
6 May
6 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
26 May
4-6 wk
22 May
23 Jun
2 wk after
22 May
13 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
21 Jun
5-7 wk
6 May
26 Jul
0 wk
10 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
14 – 21 May
13 Jun
3-4 wk
11 Jun
4 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
9 Jun
3-4 wk
11 May
30 Jun
1 wk after
27 May
20 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
23 Jun
4-6 wk
6 May
21 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
10 Jul
3-4 wk
6 May
31 Jul
0 wk
10 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
23 Jun
4-6 wk
6 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
2 Jun
2-4 wk
6 May
16 Jun
0 wk
6 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
10 Jun
1 wk after
10 May
31 May
1 wk after
Spinach
Spinacia oleracea
8 – 15 Apr
25 Jul
3-4 wk
6 May
15 Aug
0 wk
2 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
21 Mar – 4 Apr
8 May
6-8 wk
16 May
19 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
28 Apr – 12 May
15 Jun
2-4 wk
26 May
29 Jun
3 wk after
24 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
23 Jun
4-6 wk
6 May
21 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
25 Jun
3-4 wk
6 May
16 Jul
0 wk
10 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
30 Apr – 14 May
22 May
4-6 wk
11 Jun
19 Jun
5 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
21 May
8-10 wk
6 May
16 Jul
0 wk
10 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
10 May
19 Jul
1 wk after
Wild chives
Allium schoenoprasum
11 – 25 Mar
4 Jun
6-8 wk
6 May
16 Jul
0 wk
10 May
6 Jul
1 wk after
Spearmint
Mentha spicata
11 Feb – 11 Mar
21 May
8-12 wk
6 May
16 Jul
0 wk
10 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
6 May
8 Aug
0 wk
27 May
29 Jul
3 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
6 May
8-10 wk
11 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
11 May
8-10 wk
6 May
6 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
25 May
6-8 wk
6 May
6 Jul
0 wk
10 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
25 May
6-8 wk
6 May
6 Jul
0 wk
10 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
28 Mar
10-14 wk
11 May
6 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
14 – 21 May
29 May
3-4 wk
11 Jun
19 Jun
5 wk after
Cornflower
Centaurea cyanus
6 May
16 Jul
0 wk
10 May
6 Jul
1 wk after
Statice
Limonium sinuatum
17 – 31 Mar
27 Apr
8-10 wk
26 May
22 Jun
3 wk after
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
31 Mar – 14 Apr
11 May
6-8 wk
26 May
22 Jun
3 wk after
19 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
24 Mar – 7 Apr
14 May
6-8 wk
19 May
25 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Apr – 13 May
28 May
4-8 wk
10 Jun
25 Jun
5 wk after
10 Jun
15 Jun
5 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
19 Mar – 16 Apr
16 Jun
8-12 wk
11 Jun
11 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
21 May
6-8 wk
26 May
2 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 Apr
29 Apr
4-6 wk
26 May
27 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
14 Apr
8-10 wk
11 May
9 Jun
1 wk after
Love in a mist
Nigella damascena
6 May
1 Jul
0 wk
10 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
31 Mar – 14 Apr
1 May
6-8 wk
26 May
12 Jun
3 wk after
19 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
14 Apr
8-12 wk
11 May
9 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
21 Feb – 21 Mar
22 Mar
8-12 wk
16 May
17 May
1 wk after
Regal-foxtail
Ptilotus nobilis
19 Mar – 16 Apr
14 Apr
8-12 wk
11 Jun
5 wk after
Globe amaranth
Gomphrena globosa
16 – 30 Apr
28 Apr
6-8 wk
11 Jun
5 wk after
Corn poppy
Papaver rhoeas
6 May
16 Jul
0 wk
10 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
11 May
8-12 wk
6 May
6 Jul
0 wk
22 May
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
2 – 16 Apr
7 May
8-10 wk
11 Jun
2 Jul
5 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
1 Jun
5-8 wk
6 May
6 Jul
0 wk
Stock
Matthiola incana
11 – 25 Mar
4 Jun
6-8 wk
6 May
16 Jul
0 wk
27 May
6 Jul
3 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
5 May
6-8 wk
6 May
16 Jun
0 wk
27 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
30 Apr – 14 May
7 May
4-6 wk
11 Jun
5 wk after
Garden pansy
Viola × wittrockiana
25 Feb – 11 Mar
21 May
8-10 wk
6 May
16 Jul
0 wk
22 May
6 Jul
2 wk after
Petunia
Petunia
3 – 31 Mar
27 Apr
8-12 wk
26 May
22 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
28 Apr
6-8 wk
11 May
9 Jun
1 wk after
24 Jun
7 wk after
Common zinnia
Zinnia elegans
14 – 28 Apr
29 May
4-6 wk
26 May
26 Jun
3 wk after
Common morning glory
Ipomoea purpurea
7 – 21 May
29 May
3-5 wk
11 Jun
19 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
14 – 28 Apr
28 May
4-6 wk
26 May
25 Jun
3 wk after
24 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
19 Mar – 16 Apr
21 May
8-12 wk
11 Jun
16 Jul
5 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
21 Apr
8-12 wk
6 May
16 Jun
0 wk
10 Jun
5 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
5 Apr
6-8 wk
6 May
17 May
0 wk
27 May
3 wk after
Safflower
Carthamus tinctorius
6 May
16 Jun
0 wk
10 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
25 May
6-8 wk
6 May
6 Jul
0 wk
18 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
8 Jun
4-6 wk
6 May
6 Jul
0 wk
27 May
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
3 – 17 Mar
27 Mar
10-12 wk
26 May
5 Jun
3 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
5 Jun
3-4 wk
26 May
26 Jun
3 wk after
10 Jun
16 Jun
5 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
25 May
6-8 wk
26 May
6 Jul
3 wk after
24 Jun
26 Jun
7 wk after
Annual phlox
Phlox drummondii
21 Mar – 4 Apr
21 May
6-8 wk
16 May
2 Jul
1 wk after
24 Jun
7 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
21 Apr
8-12 wk
6 May
16 Jun
0 wk
10 Jun
5 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
21 May
6-8 wk
26 May
2 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
15 May
6-8 wk
11 May
26 Jun
1 wk after
24 Jun
7 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
11 Apr
8-10 wk
6 May
6 Jun
0 wk
10 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
2 – 30 Apr
8 May
6-10 wk
11 Jun
19 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
6 May
10 Jul
0 wk
10 May
30 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
29 Apr
8-10 wk
26 May
24 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Mar
5 May
6-8 wk
6 May
16 Jun
0 wk
27 May
6 Jun
3 wk after