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Method
Rel. frost
Last spring frost (0°C) 11 May Frost 3 of 4 years · 20 years of data
Frost-free season 132 days 11 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)
23 Mar – 6 Apr
17 Jun
5-7 wk
11 May
22 Jul
0 wk
4 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
30 Mar – 13 Apr
29 Jun
4-6 wk
11 May
27 Jul
0 wk
4 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
26 Feb – 26 Mar
11 Apr
8-12 wk
21 May
6 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Mar – 6 Apr
12 Jun
5-7 wk
11 May
17 Jul
0 wk
29 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
19 – 26 May
20 May
3-4 wk
16 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 May
21 May
4-5 wk
16 Jun
18 Jun
5 wk after
16 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
24 – 31 May
3-4 wk
21 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Feb – 16 Mar
28 Mar
8-12 wk
11 May
23 May
0 wk
21 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 May
12 Jun
1 wk before
4 May
2 Jun
1 wk before
Maize
Zea mays
3 – 10 May
10 May
3-4 wk
31 May
31 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Apr
30 Jun
3-4 wk
16 May
21 Jul
1 wk after
21 May
11 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 May
7 Jul
0 wk
29 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Mar – 6 Apr
12 Jun
5-7 wk
11 May
17 Jul
0 wk
29 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
4 – 18 Apr
26 May
4-6 wk
16 May
23 Jun
1 wk after
16 May
13 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Mar – 6 Apr
22 Jun
5-7 wk
11 May
27 Jul
0 wk
4 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
19 – 26 May
10 Jun
3-4 wk
16 Jun
1 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Apr
8 Jun
3-4 wk
16 May
29 Jun
1 wk after
21 May
19 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Apr
11 Jul
3-4 wk
11 May
1 Aug
0 wk
4 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 Apr
3 Jun
2-4 wk
29 Apr
17 Jun
2 wk before
29 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 May
12 Jun
1 wk before
4 May
2 Jun
1 wk before
Spinach
Spinacia oleracea
13 – 20 Apr
26 Jul
3-4 wk
11 May
16 Aug
0 wk
23 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
10 wk after
Garden tomato
Solanum lycopersicum
5 – 19 Apr
19 Apr
6-8 wk
31 May
31 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 May
12 Jun
2-4 wk
31 May
26 Jun
3 wk after
16 Jun
16 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Apr
26 Jun
3-4 wk
11 May
17 Jul
0 wk
4 May
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
5 – 19 May
19 May
4-6 wk
16 Jun
16 Jun
5 wk after
Lemon balm
Melissa officinalis
2 – 16 Mar
22 May
8-10 wk
11 May
17 Jul
0 wk
1 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
4 May
21 Jul
1 wk before
Wild chives
Allium schoenoprasum
16 – 30 Mar
5 Jun
6-8 wk
11 May
17 Jul
0 wk
4 May
7 Jul
1 wk before
Spearmint
Mentha spicata
16 Feb – 16 Mar
22 May
8-12 wk
11 May
17 Jul
0 wk
1 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
11 May
10 Aug
0 wk
21 May
31 Jul
1 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
7 May
8-10 wk
16 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Mar
12 May
8-10 wk
11 May
7 Jul
0 wk
Oregano
Origanum vulgare
16 – 30 Mar
26 May
6-8 wk
11 May
7 Jul
0 wk
1 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
16 – 30 Mar
26 May
6-8 wk
11 May
7 Jul
0 wk
4 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
28 Mar
10-14 wk
16 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
19 – 26 May
26 May
3-4 wk
16 Jun
16 Jun
5 wk after
Cornflower
Centaurea cyanus
11 May
17 Jul
0 wk
4 May
7 Jul
1 wk before
Statice
Limonium sinuatum
22 Mar – 5 Apr
25 Apr
8-10 wk
31 May
20 Jun
3 wk after
Sweet William
Dianthus barbatus
16 – 30 Mar
6-8 wk
11 May
0 wk
16 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
9 May
6-8 wk
31 May
20 Jun
3 wk after
19 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
29 Mar – 12 Apr
12 May
6-8 wk
24 May
23 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
6 Apr – 4 May
26 May
4-8 wk
1 Jun
23 Jun
3 wk after
1 Jun
13 Jun
3 wk after
Foxglove
Digitalis purpurea
2 – 16 Mar
8-10 wk
11 May
0 wk
21 May
1 wk after
Busy lizzie
Impatiens walleriana
24 Mar – 21 Apr
16 Jun
8-12 wk
16 Jun
11 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
19 May
6-8 wk
31 May
30 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
19 Apr – 3 May
29 Apr
4-6 wk
31 May
3 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Mar
16 Apr
8-10 wk
16 May
11 Jun
1 wk after
Love in a mist
Nigella damascena
11 May
2 Jul
0 wk
4 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
5 – 19 Apr
29 Apr
6-8 wk
31 May
10 Jun
3 wk after
19 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
16 Apr
8-12 wk
16 May
11 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
26 Feb – 26 Mar
23 Mar
8-12 wk
21 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
8 Mar – 5 Apr
21 Apr
8-12 wk
31 May
16 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
5 – 19 Apr
5 May
6-8 wk
31 May
16 Jun
3 wk after
Corn poppy
Papaver rhoeas
11 May
17 Jul
0 wk
4 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
16 Feb – 16 Mar
12 May
8-12 wk
11 May
7 Jul
0 wk
16 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
7 – 21 Apr
5 May
8-10 wk
16 Jun
30 Jun
5 wk after
Sweet pea
Lathyrus odoratus
16 Mar – 6 Apr
2 Jun
5-8 wk
11 May
7 Jul
0 wk
Stock
Matthiola incana
16 – 30 Mar
5 Jun
6-8 wk
11 May
17 Jul
0 wk
21 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
16 – 30 Mar
6 May
6-8 wk
11 May
17 Jun
0 wk
21 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
19 Apr – 3 May
14 May
4-6 wk
31 May
11 Jun
3 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Mar
22 May
8-10 wk
11 May
17 Jul
0 wk
16 May
7 Jul
1 wk after
Petunia
Petunia
8 Mar – 5 Apr
25 Apr
8-12 wk
31 May
20 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
30 Apr
6-8 wk
16 May
11 Jun
1 wk after
16 Jun
5 wk after
Common zinnia
Zinnia elegans
19 Apr – 3 May
29 May
4-6 wk
31 May
26 Jun
3 wk after
Common morning glory
Ipomoea purpurea
12 – 26 May
26 May
3-5 wk
16 Jun
16 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
19 Apr – 3 May
26 May
4-6 wk
31 May
23 Jun
3 wk after
16 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
24 Mar – 21 Apr
21 May
8-12 wk
16 Jun
16 Jul
5 wk after
Bee balm
Monarda didyma
16 Feb – 16 Mar
22 Apr
8-12 wk
11 May
17 Jun
0 wk
1 Jun
7 Jun
3 wk after
Yarrow
Achillea millefolium
16 – 30 Mar
6 Apr
6-8 wk
11 May
18 May
0 wk
21 May
1 wk after
Safflower
Carthamus tinctorius
11 May
17 Jun
0 wk
4 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
16 – 30 Mar
26 May
6-8 wk
11 May
7 Jul
0 wk
2 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
30 Mar – 13 Apr
9 Jun
4-6 wk
11 May
7 Jul
0 wk
21 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
8 – 22 Mar
25 Mar
10-12 wk
31 May
3 Jun
3 wk after
Sunflower
Helianthus annuus
3 – 10 May
5 Jun
3-4 wk
31 May
26 Jun
3 wk after
1 Jun
16 Jun
3 wk after
China aster
Callistephus chinensis
5 – 19 Apr
25 May
6-8 wk
31 May
6 Jul
3 wk after
16 Jun
26 Jun
5 wk after
Annual phlox
Phlox drummondii
26 Mar – 9 Apr
19 May
6-8 wk
21 May
30 Jun
1 wk after
16 Jun
20 Jun
5 wk after
Hollyhock
Alcea rosea
16 – 30 Mar
6-8 wk
11 May
0 wk
21 May
1 wk after
Alpine delphinium
Delphinium elatum
16 Feb – 16 Mar
22 Apr
8-12 wk
11 May
17 Jun
0 wk
1 Jun
7 Jun
3 wk after
African marigold
Tagetes erecta
5 – 19 Apr
19 May
6-8 wk
31 May
30 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
15 May
6-8 wk
16 May
26 Jun
1 wk after
16 Jun
16 Jun
5 wk after
Wood sage
Salvia nemorosa
2 – 16 Mar
12 Apr
8-10 wk
11 May
7 Jun
0 wk
1 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
7 Apr – 5 May
5 May
6-10 wk
16 Jun
16 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
11 May
17 Jul
0 wk
4 May
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
23 Apr
8-10 wk
31 May
18 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
16 – 30 Mar
6 May
6-8 wk
11 May
17 Jun
0 wk
21 May
7 Jun
1 wk after