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