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