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Method
Rel. frost
Last spring frost (0°C) 9 May Frost 3 of 4 years · 20 years of data
Frost-free season 137 days 9 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)
21 Mar – 4 Apr
16 Jun
5-7 wk
9 May
21 Jul
0 wk
2 May
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
28 Jun
4-6 wk
9 May
26 Jul
0 wk
2 May
16 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
24 Feb – 24 Mar
31 Mar
8-12 wk
19 May
26 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
21 Mar – 4 Apr
11 Jun
5-7 wk
9 May
16 Jul
0 wk
27 Apr
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
1 – 8 May
25 May
3-4 wk
29 May
15 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
10 – 17 May
23 May
4-5 wk
14 Jun
20 Jun
5 wk after
14 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Feb – 14 Mar
21 Mar
8-12 wk
9 May
16 May
0 wk
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
2 May
5 Jun
1 wk before
2 May
26 May
1 wk before
Maize
Zea mays
Fleece
21 – 28 Apr
15 May
3-4 wk
19 May
5 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
28 Jun
3-4 wk
14 May
19 Jul
1 wk after
19 May
9 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 May
6 Jul
0 wk
27 Apr
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
21 Mar – 4 Apr
11 Jun
5-7 wk
9 May
16 Jul
0 wk
27 Apr
6 Jul
2 wk before
Potato
Solanum tuberosum
2 – 16 Apr
22 May
4-6 wk
14 May
19 Jun
1 wk after
14 May
9 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Mar – 4 Apr
21 Jun
5-7 wk
9 May
26 Jul
0 wk
2 May
16 Jul
1 wk before
Pumpkin
Cucurbita pepo
17 – 24 May
30 May
3-4 wk
14 Jun
20 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Apr
2 Jun
3-4 wk
14 May
23 Jun
1 wk after
19 May
13 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
23 Jun
4-6 wk
9 May
21 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Apr
10 Jul
3-4 wk
9 May
31 Jul
0 wk
2 May
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
23 Jun
4-6 wk
9 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Mar – 13 Apr
31 May
2-4 wk
27 Apr
14 Jun
2 wk before
27 Apr
4 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
2 May
5 Jun
1 wk before
2 May
26 May
1 wk before
Spinach
Spinacia oleracea
11 – 18 Apr
25 Jul
3-4 wk
9 May
15 Aug
0 wk
21 Apr
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 Jun
4-6 wk
17 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
24 Mar – 7 Apr
24 Apr
6-8 wk
19 May
5 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
1 – 15 May
1 Jun
2-4 wk
29 May
15 Jun
3 wk after
14 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
23 Jun
4-6 wk
9 May
21 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Apr
25 Jun
3-4 wk
9 May
16 Jul
0 wk
2 May
6 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
3 – 17 May
8 May
4-6 wk
14 Jun
5 wk after
Lemon balm
Melissa officinalis
28 Feb – 14 Mar
21 May
8-10 wk
9 May
16 Jul
0 wk
30 May
6 Jul
3 wk after
Dill
Anethum graveolens
2 May
19 Jul
1 wk before
Wild chives
Allium schoenoprasum
14 – 28 Mar
4 Jun
6-8 wk
9 May
16 Jul
0 wk
2 May
6 Jul
1 wk before
Spearmint
Mentha spicata
14 Feb – 14 Mar
21 May
8-12 wk
9 May
16 Jul
0 wk
30 May
6 Jul
3 wk after
Coriander
Coriandrum sativum
9 May
8 Aug
0 wk
19 May
29 Jul
1 wk after
Garden sage
Salvia officinalis
5 – 19 Mar
6 May
8-10 wk
14 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
28 Feb – 14 Mar
11 May
8-10 wk
9 May
6 Jul
0 wk
Oregano
Origanum vulgare
14 – 28 Mar
25 May
6-8 wk
9 May
6 Jul
0 wk
30 May
26 Jun
3 wk after
Parsley
Petroselinum crispum
14 – 28 Mar
25 May
6-8 wk
9 May
6 Jul
0 wk
2 May
26 Jun
1 wk before
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
28 Mar
10-14 wk
14 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
17 – 24 May
3-4 wk
14 Jun
5 wk after
Cornflower
Centaurea cyanus
9 May
16 Jul
0 wk
2 May
6 Jul
1 wk before
Statice
Limonium sinuatum
20 Mar – 3 Apr
23 Apr
8-10 wk
29 May
18 Jun
3 wk after
Sweet William
Dianthus barbatus
14 – 28 Mar
6-8 wk
9 May
0 wk
14 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
3 – 17 Apr
7 May
6-8 wk
29 May
18 Jun
3 wk after
17 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
27 Mar – 10 Apr
11 May
6-8 wk
22 May
22 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Apr – 2 May
25 May
4-8 wk
30 May
22 Jun
3 wk after
30 May
12 Jun
3 wk after
Foxglove
Digitalis purpurea
28 Feb – 14 Mar
8-10 wk
9 May
0 wk
19 May
1 wk after
Busy lizzie
Impatiens walleriana
22 Mar – 19 Apr
12 Jun
8-12 wk
14 Jun
7 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
3 – 17 Apr
17 May
6-8 wk
29 May
28 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
17 Apr – 1 May
25 Apr
4-6 wk
29 May
3 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
14 Apr
8-10 wk
14 May
9 Jun
1 wk after
Love in a mist
Nigella damascena
9 May
1 Jul
0 wk
2 May
21 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
3 – 17 Apr
27 Apr
6-8 wk
29 May
8 Jun
3 wk after
17 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
19 Feb – 19 Mar
14 Apr
8-12 wk
14 May
9 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
24 Feb – 24 Mar
22 Mar
8-12 wk
19 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
6 Mar – 3 Apr
17 Apr
8-12 wk
29 May
12 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
3 – 17 Apr
1 May
6-8 wk
29 May
12 Jun
3 wk after
Corn poppy
Papaver rhoeas
9 May
16 Jul
0 wk
2 May
6 Jul
1 wk before
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
11 May
8-12 wk
9 May
6 Jul
0 wk
14 May
26 Jun
1 wk after
Flossflower
Ageratum houstonianum
5 – 19 Apr
3 May
8-10 wk
14 Jun
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
14 Mar – 4 Apr
1 Jun
5-8 wk
9 May
6 Jul
0 wk
Stock
Matthiola incana
14 – 28 Mar
4 Jun
6-8 wk
9 May
16 Jul
0 wk
19 May
6 Jul
1 wk after
Wormwood
Artemisia absinthium
14 – 28 Mar
5 May
6-8 wk
9 May
16 Jun
0 wk
19 May
6 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
17 Apr – 1 May
10 May
4-6 wk
29 May
7 Jun
3 wk after
Garden pansy
Viola × wittrockiana
28 Feb – 14 Mar
21 May
8-10 wk
9 May
16 Jul
0 wk
14 May
6 Jul
1 wk after
Petunia
Petunia
6 Mar – 3 Apr
23 Apr
8-12 wk
29 May
18 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
28 Apr
6-8 wk
14 May
9 Jun
1 wk after
14 Jun
5 wk after
Common zinnia
Zinnia elegans
17 Apr – 1 May
25 May
4-6 wk
29 May
22 Jun
3 wk after
Common morning glory
Ipomoea purpurea
10 – 24 May
15 May
3-5 wk
14 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
17 Apr – 1 May
25 May
4-6 wk
29 May
22 Jun
3 wk after
14 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
22 Mar – 19 Apr
17 May
8-12 wk
14 Jun
12 Jul
5 wk after
Bee balm
Monarda didyma
14 Feb – 14 Mar
21 Apr
8-12 wk
9 May
16 Jun
0 wk
30 May
6 Jun
3 wk after
Yarrow
Achillea millefolium
14 – 28 Mar
5 Apr
6-8 wk
9 May
17 May
0 wk
19 May
1 wk after
Safflower
Carthamus tinctorius
9 May
16 Jun
0 wk
2 May
6 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
14 – 28 Mar
25 May
6-8 wk
9 May
6 Jul
0 wk
31 Mar
26 Jun
6 wk before
Bishop's flower
Ammi majus
28 Mar – 11 Apr
8 Jun
4-6 wk
9 May
6 Jul
0 wk
19 May
26 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
6 – 20 Mar
24 Mar
10-12 wk
29 May
2 Jun
3 wk after
Sunflower
Helianthus annuus
1 – 8 May
5 Jun
3-4 wk
29 May
26 Jun
3 wk after
30 May
16 Jun
3 wk after
China aster
Callistephus chinensis
3 – 17 Apr
25 May
6-8 wk
29 May
6 Jul
3 wk after
14 Jun
26 Jun
5 wk after
Annual phlox
Phlox drummondii
24 Mar – 7 Apr
17 May
6-8 wk
19 May
28 Jun
1 wk after
14 Jun
18 Jun
5 wk after
Hollyhock
Alcea rosea
14 – 28 Mar
6-8 wk
9 May
0 wk
19 May
1 wk after
Alpine delphinium
Delphinium elatum
14 Feb – 14 Mar
21 Apr
8-12 wk
9 May
16 Jun
0 wk
30 May
6 Jun
3 wk after
African marigold
Tagetes erecta
3 – 17 Apr
17 May
6-8 wk
29 May
28 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
15 May
6-8 wk
14 May
26 Jun
1 wk after
14 Jun
16 Jun
5 wk after
Wood sage
Salvia nemorosa
28 Feb – 14 Mar
11 Apr
8-10 wk
9 May
6 Jun
0 wk
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
5 Apr – 3 May
24 Apr
6-10 wk
14 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
9 May
16 Jul
0 wk
2 May
6 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
20 Mar – 3 Apr
25 Apr
8-10 wk
29 May
20 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Mar
5 May
6-8 wk
9 May
16 Jun
0 wk
19 May
6 Jun
1 wk after