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Method
Rel. frost
Last spring frost (0°C) 4 May Frost 3 of 4 years · 20 years of data
Frost-free season 139 days 4 May – 20 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)
16 – 30 Mar
20 Jun
5-7 wk
4 May
25 Jul
0 wk
28 Apr
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
2 Jul
4-6 wk
4 May
30 Jul
0 wk
28 Apr
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
3 – 31 Mar
3 Apr
8-12 wk
26 May
29 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Mar
15 Jun
5-7 wk
4 May
20 Jul
0 wk
21 Apr
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
12 – 19 May
28 May
3-4 wk
9 Jun
18 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
5 – 12 May
23 May
4-5 wk
9 Jun
20 Jun
5 wk after
14 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
22 – 29 May
3-4 wk
19 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Feb – 9 Mar
2 Apr
8-12 wk
4 May
28 May
0 wk
17 May
18 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Apr
17 Jun
1 wk before
28 Apr
7 Jun
1 wk before
Maize
Zea mays
28 Apr – 5 May
18 May
3-4 wk
26 May
8 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
8 Jul
3-4 wk
11 May
29 Jul
1 wk after
17 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
10 Jul
0 wk
21 Apr
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Mar
15 Jun
5-7 wk
4 May
20 Jul
0 wk
21 Apr
10 Jul
2 wk before
Potato
Solanum tuberosum
28 Mar – 11 Apr
4 Jun
4-6 wk
9 May
2 Jul
1 wk after
9 May
22 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Mar
25 Jun
5-7 wk
4 May
30 Jul
0 wk
28 Apr
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
12 – 19 May
15 Jun
3-4 wk
9 Jun
6 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
12 Jun
3-4 wk
11 May
3 Jul
1 wk after
17 May
23 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
27 Jun
4-6 wk
4 May
25 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Apr
14 Jul
3-4 wk
4 May
4 Aug
0 wk
28 Apr
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
27 Jun
4-6 wk
4 May
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Mar – 7 Apr
6 Jun
2-4 wk
21 Apr
20 Jun
2 wk before
21 Apr
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Apr
17 Jun
1 wk before
28 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
6 – 13 Apr
29 Jul
3-4 wk
4 May
19 Aug
0 wk
14 Apr
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 Jun
4-6 wk
17 Jul
11 wk after
Garden tomato
Solanum lycopersicum
31 Mar – 14 Apr
27 Apr
6-8 wk
26 May
8 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
28 Apr – 12 May
17 Jun
2-4 wk
26 May
1 Jul
3 wk after
14 Jun
21 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
27 Jun
4-6 wk
4 May
25 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Apr
29 Jun
3-4 wk
4 May
20 Jul
0 wk
28 Apr
10 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
28 Apr – 12 May
24 May
4-6 wk
9 Jun
21 Jun
5 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
25 May
8-10 wk
4 May
20 Jul
0 wk
30 May
10 Jul
4 wk after
Dill
Anethum graveolens
28 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
9 – 23 Mar
8 Jun
6-8 wk
4 May
20 Jul
0 wk
28 Apr
10 Jul
1 wk before
Spearmint
Mentha spicata
9 Feb – 9 Mar
25 May
8-12 wk
4 May
20 Jul
0 wk
30 May
10 Jul
4 wk after
Coriander
Coriandrum sativum
4 May
18 Aug
0 wk
17 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
10 May
8-10 wk
11 May
5 Jul
1 wk after
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
15 May
8-10 wk
4 May
10 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Mar
29 May
6-8 wk
4 May
10 Jul
0 wk
30 May
30 Jun
4 wk after
Parsley
Petroselinum crispum
9 – 23 Mar
29 May
6-8 wk
4 May
10 Jul
0 wk
28 Apr
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
5 Apr
10-14 wk
11 May
14 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
12 – 19 May
31 May
3-4 wk
9 Jun
21 Jun
5 wk after
Cornflower
Centaurea cyanus
4 May
20 Jul
0 wk
28 Apr
10 Jul
1 wk before
Statice
Limonium sinuatum
17 – 31 Mar
4 May
8-10 wk
26 May
29 Jun
3 wk after
Sweet William
Dianthus barbatus
9 – 23 Mar
6-8 wk
4 May
0 wk
9 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
31 Mar – 14 Apr
18 May
6-8 wk
26 May
29 Jun
3 wk after
17 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
24 Mar – 7 Apr
23 May
6-8 wk
19 May
4 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Apr – 2 May
6 Jun
4-8 wk
30 May
4 Jul
4 wk after
30 May
24 Jun
4 wk after
Foxglove
Digitalis purpurea
23 Feb – 9 Mar
8-10 wk
4 May
0 wk
17 May
2 wk after
Busy lizzie
Impatiens walleriana
17 Mar – 14 Apr
20 Jun
8-12 wk
9 Jun
15 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
28 May
6-8 wk
26 May
9 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
14 – 28 Apr
3 May
4-6 wk
26 May
31 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
24 Apr
8-10 wk
11 May
19 Jun
1 wk after
Love in a mist
Nigella damascena
4 May
5 Jul
0 wk
28 Apr
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
31 Mar – 14 Apr
8 May
6-8 wk
26 May
19 Jun
3 wk after
17 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
24 Apr
8-12 wk
11 May
19 Jun
1 wk after
Cardoon
Cynara cardunculus
3 – 31 Mar
25 Mar
8-12 wk
26 May
3 wk after
Regal-foxtail
Ptilotus nobilis
17 Mar – 14 Apr
16 Apr
8-12 wk
9 Jun
11 Jun
5 wk after
Globe amaranth
Gomphrena globosa
14 – 28 Apr
30 Apr
6-8 wk
9 Jun
11 Jun
5 wk after
Corn poppy
Papaver rhoeas
4 May
20 Jul
0 wk
28 Apr
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
15 May
8-12 wk
4 May
10 Jul
0 wk
9 May
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
31 Mar – 14 Apr
14 May
8-10 wk
9 Jun
9 Jul
5 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Mar
5 Jun
5-8 wk
4 May
10 Jul
0 wk
Stock
Matthiola incana
9 – 23 Mar
8 Jun
6-8 wk
4 May
20 Jul
0 wk
17 May
10 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Mar
9 May
6-8 wk
4 May
20 Jun
0 wk
17 May
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
28 Apr – 12 May
9 May
4-6 wk
9 Jun
5 wk after
Garden pansy
Viola × wittrockiana
23 Feb – 9 Mar
25 May
8-10 wk
4 May
20 Jul
0 wk
9 May
10 Jul
1 wk after
Petunia
Petunia
3 – 31 Mar
4 May
8-12 wk
26 May
29 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
8 May
6-8 wk
11 May
19 Jun
1 wk after
14 Jun
6 wk after
Common zinnia
Zinnia elegans
14 – 28 Apr
2 Jun
4-6 wk
26 May
30 Jun
3 wk after
Common morning glory
Ipomoea purpurea
5 – 19 May
31 May
3-5 wk
9 Jun
21 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
14 – 28 Apr
6 Jun
4-6 wk
26 May
4 Jul
3 wk after
14 Jun
24 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
3 Apr – 1 May
16 May
8-12 wk
26 Jun
11 Jul
8 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
25 Apr
8-12 wk
4 May
20 Jun
0 wk
30 May
10 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Mar
9 Apr
6-8 wk
4 May
21 May
0 wk
17 May
2 wk after
Safflower
Carthamus tinctorius
4 May
20 Jun
0 wk
28 Apr
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Mar
29 May
6-8 wk
4 May
10 Jul
0 wk
19 Mar
30 Jun
7 wk before
Bishop's flower
Ammi majus
23 Mar – 6 Apr
12 Jun
4-6 wk
4 May
10 Jul
0 wk
17 May
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
3 – 17 Mar
5 Apr
10-12 wk
26 May
14 Jun
3 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
13 Jun
3-4 wk
26 May
4 Jul
3 wk after
30 May
24 Jun
4 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
2 Jun
6-8 wk
26 May
14 Jul
3 wk after
14 Jun
4 Jul
6 wk after
Annual phlox
Phlox drummondii
22 Mar – 5 Apr
28 May
6-8 wk
17 May
9 Jul
2 wk after
14 Jun
29 Jun
6 wk after
Hollyhock
Alcea rosea
9 – 23 Mar
6-8 wk
4 May
0 wk
17 May
2 wk after
Alpine delphinium
Delphinium elatum
9 Feb – 9 Mar
25 Apr
8-12 wk
4 May
20 Jun
0 wk
30 May
10 Jun
4 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
28 May
6-8 wk
26 May
9 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
23 May
6-8 wk
11 May
4 Jul
1 wk after
14 Jun
24 Jun
6 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
15 Apr
8-10 wk
4 May
10 Jun
0 wk
30 May
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
31 Mar – 28 Apr
10 May
6-10 wk
9 Jun
21 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
4 May
20 Jul
0 wk
28 Apr
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
25 Apr
8-10 wk
26 May
20 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Mar
9 May
6-8 wk
4 May
20 Jun
0 wk
17 May
10 Jun
2 wk after