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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 132 days 9 May – 18 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
12 Jun
5-7 wk
9 May
17 Jul
0 wk
10 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
24 Jun
4-6 wk
9 May
22 Jul
0 wk
10 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
25 Feb – 25 Mar
30 Mar
8-12 wk
20 May
25 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
21 Mar – 4 Apr
7 Jun
5-7 wk
9 May
12 Jul
0 wk
9 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
1 – 8 May
24 May
3-4 wk
29 May
14 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
22 May
4-5 wk
12 Jun
19 Jun
5 wk after
21 Jun
6 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
20 Mar
8-12 wk
9 May
15 May
0 wk
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
4 Jun
0 wk
10 May
25 May
0 wk
Maize
Zea mays
Fleece
22 – 29 Apr
14 May
3-4 wk
20 May
4 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
26 Jun
3-4 wk
15 May
17 Jul
1 wk after
22 May
7 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 May
2 Jul
0 wk
9 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
21 Mar – 4 Apr
7 Jun
5-7 wk
9 May
12 Jul
0 wk
9 May
2 Jul
0 wk
Potato
Solanum tuberosum
7 – 21 Apr
18 May
4-6 wk
19 May
15 Jun
1 wk after
19 May
5 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Mar – 4 Apr
17 Jun
5-7 wk
9 May
22 Jul
0 wk
10 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
15 – 22 May
29 May
3-4 wk
12 Jun
19 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
25 May
3-4 wk
15 May
15 Jun
1 wk after
22 May
5 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
19 Jun
4-6 wk
9 May
17 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Apr
6 Jul
3-4 wk
9 May
27 Jul
0 wk
10 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
19 Jun
4-6 wk
9 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Apr
25 May
2-4 wk
9 May
8 Jun
0 wk
9 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
4 Jun
0 wk
10 May
25 May
0 wk
Spinach
Spinacia oleracea
11 – 18 Apr
21 Jul
3-4 wk
9 May
11 Aug
0 wk
6 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
25 Mar – 8 Apr
23 Apr
6-8 wk
20 May
4 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
1 – 15 May
31 May
2-4 wk
29 May
14 Jun
3 wk after
21 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
19 Jun
4-6 wk
9 May
17 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Apr
21 Jun
3-4 wk
9 May
12 Jul
0 wk
10 May
2 Jul
0 wk

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
17 Apr – 1 May
22 May
4-6 wk
29 May
19 Jun
3 wk after
Lemon balm
Melissa officinalis
28 Feb – 14 Mar
17 May
8-10 wk
9 May
12 Jul
0 wk
3 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
10 May
17 Jul
0 wk
Wild chives
Allium schoenoprasum
14 – 28 Mar
31 May
6-8 wk
9 May
12 Jul
0 wk
10 May
2 Jul
0 wk
Spearmint
Mentha spicata
14 Feb – 14 Mar
17 May
8-12 wk
9 May
12 Jul
0 wk
3 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
9 May
6 Aug
0 wk
22 May
27 Jul
2 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
2 May
8-10 wk
15 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
28 Feb – 14 Mar
7 May
8-10 wk
9 May
2 Jul
0 wk
Oregano
Origanum vulgare
14 – 28 Mar
21 May
6-8 wk
9 May
2 Jul
0 wk
3 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
14 – 28 Mar
21 May
6-8 wk
9 May
2 Jul
0 wk
10 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
25 Mar
10-14 wk
15 May
3 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
Fleece
1 – 8 May
29 May
3-4 wk
29 May
19 Jun
3 wk after
Cornflower
Centaurea cyanus
9 May
12 Jul
0 wk
10 May
2 Jul
0 wk
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
19 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
15 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
29 Mar – 12 Apr
9 May
6-8 wk
24 May
20 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
8 Apr – 6 May
23 May
4-8 wk
3 Jun
20 Jun
4 wk after
3 Jun
10 Jun
4 wk after
Foxglove
Digitalis purpurea
28 Feb – 14 Mar
8-10 wk
9 May
0 wk
22 May
2 wk after
Busy lizzie
Impatiens walleriana
20 Mar – 17 Apr
9 Jun
8-12 wk
12 Jun
4 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
22 Apr
4-6 wk
29 May
3 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
12 Apr
8-10 wk
15 May
7 Jun
1 wk after
Love in a mist
Nigella damascena
9 May
27 Jun
0 wk
10 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
3 – 17 Apr
27 Apr
6-8 wk
29 May
8 Jun
3 wk after
15 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
12 Apr
8-12 wk
15 May
7 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
25 Feb – 25 Mar
18 Mar
8-12 wk
20 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
6 Mar – 3 Apr
14 Apr
8-12 wk
29 May
9 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
3 – 17 Apr
28 Apr
6-8 wk
29 May
9 Jun
3 wk after
Corn poppy
Papaver rhoeas
9 May
12 Jul
0 wk
10 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
7 May
8-12 wk
9 May
2 Jul
0 wk
19 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
3 – 17 Apr
3 May
8-10 wk
12 Jun
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
14 Mar – 4 Apr
28 May
5-8 wk
9 May
2 Jul
0 wk
Stock
Matthiola incana
14 – 28 Mar
31 May
6-8 wk
9 May
12 Jul
0 wk
22 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
14 – 28 Mar
1 May
6-8 wk
9 May
12 Jun
0 wk
22 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
17 Apr – 1 May
7 May
4-6 wk
29 May
4 Jun
3 wk after
Garden pansy
Viola × wittrockiana
28 Feb – 14 Mar
17 May
8-10 wk
9 May
12 Jul
0 wk
19 May
2 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
20 Mar – 3 Apr
26 Apr
6-8 wk
15 May
7 Jun
1 wk after
21 Jun
6 wk after
Common zinnia
Zinnia elegans
17 Apr – 1 May
22 May
4-6 wk
29 May
19 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
24 Apr – 8 May
29 May
3-5 wk
29 May
19 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
17 Apr – 1 May
23 May
4-6 wk
29 May
20 Jun
3 wk after
21 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
1 – 29 Apr
29 Apr
8-12 wk
24 Jun
24 Jun
7 wk after
Bee balm
Monarda didyma
14 Feb – 14 Mar
17 Apr
8-12 wk
9 May
12 Jun
0 wk
3 Jun
4 wk after
Yarrow
Achillea millefolium
14 – 28 Mar
1 Apr
6-8 wk
9 May
13 May
0 wk
22 May
2 wk after
Safflower
Carthamus tinctorius
9 May
12 Jun
0 wk
10 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
14 – 28 Mar
21 May
6-8 wk
9 May
2 Jul
0 wk
23 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
28 Mar – 11 Apr
4 Jun
4-6 wk
9 May
2 Jul
0 wk
22 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
6 – 20 Mar
22 Mar
10-12 wk
29 May
31 May
3 wk after
Sunflower
Helianthus annuus
1 – 8 May
2 Jun
3-4 wk
29 May
23 Jun
3 wk after
3 Jun
13 Jun
4 wk after
China aster
Callistephus chinensis
3 – 17 Apr
22 May
6-8 wk
29 May
3 Jul
3 wk after
21 Jun
23 Jun
6 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
17 May
6-8 wk
20 May
28 Jun
2 wk after
21 Jun
6 wk after
Hollyhock
Alcea rosea
14 – 28 Mar
6-8 wk
9 May
0 wk
22 May
2 wk after
Alpine delphinium
Delphinium elatum
14 Feb – 14 Mar
17 Apr
8-12 wk
9 May
12 Jun
0 wk
3 Jun
4 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
20 Mar – 3 Apr
12 May
6-8 wk
15 May
23 Jun
1 wk after
21 Jun
6 wk after
Wood sage
Salvia nemorosa
28 Feb – 14 Mar
7 Apr
8-10 wk
9 May
2 Jun
0 wk
3 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
20 Mar – 17 Apr
8 May
6-10 wk
29 May
19 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
9 May
12 Jul
0 wk
10 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
20 Mar – 3 Apr
24 Apr
8-10 wk
29 May
19 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Mar
1 May
6-8 wk
9 May
12 Jun
0 wk
22 May
2 Jun
2 wk after