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Method
Rel. frost
Last spring frost (0°C) 17 May Frost 9 of 10 years · 20 years of data
Frost-free season 104 days 17 May – 29 Aug
Probability that frost is over

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

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Season too short
16 – 30 Apr
4-6 wk
28 May
2 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
12 May
8-10 wk
17 May
7 Jul
0 wk
11 Jun
27 Jun
4 wk after
Dill
Anethum graveolens
18 May
6 Jul
0 wk
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
2 Jun
6-8 wk
17 May
14 Jul
0 wk
18 May
4 Jul
0 wk
Spearmint
Mentha spicata
22 Feb – 22 Mar
19 May
8-12 wk
17 May
14 Jul
0 wk
11 Jun
4 Jul
4 wk after
Coriander
Coriandrum sativum
17 May
26 Jul
0 wk
30 May
16 Jul
2 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
4 May
8-10 wk
23 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
8 – 22 Mar
9 May
8-10 wk
17 May
4 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
23 May
6-8 wk
17 May
4 Jul
0 wk
11 Jun
24 Jun
4 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
23 May
6-8 wk
17 May
4 Jul
0 wk
18 May
24 Jun
0 wk
Rosemary
Salvia rosmarinus
14 Feb – 14 Mar
12 Mar
10-14 wk
23 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
Season too short
30 Apr – 7 May
3-4 wk
28 May
2 wk after
Cornflower
Centaurea cyanus
17 May
14 Jul
0 wk
18 May
4 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
12 – 26 Mar
20 Mar
8-10 wk
21 May
1 wk after
Sweet William
Dianthus barbatus
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
27 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
26 Mar – 9 Apr
3 Apr
6-8 wk
21 May
1 wk after
18 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
22 Mar – 5 Apr
11 Apr
6-8 wk
17 May
23 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
4 Apr – 2 May
9 Apr
4-8 wk
30 May
2 wk after
30 May
2 wk after
Foxglove
Digitalis purpurea
8 – 22 Mar
8-10 wk
17 May
0 wk
30 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
5 Mar – 2 Apr
7 May
8-12 wk
28 May
2 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
26 Mar – 9 Apr
13 Apr
6-8 wk
21 May
25 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
25 Apr – 9 May
4-6 wk
6 Jun
3 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Mar
1 Apr
8-10 wk
23 May
27 May
1 wk after
Love in a mist
Nigella damascena
17 May
22 Jun
0 wk
18 May
12 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
1 wk after
18 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
28 Feb – 28 Mar
1 Apr
8-12 wk
23 May
27 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
26 Feb – 26 Mar
18 Mar
8-12 wk
21 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
5 Mar – 2 Apr
8-12 wk
28 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
2 – 16 Apr
6-8 wk
28 May
2 wk after
Corn poppy
Papaver rhoeas
17 May
7 Jul
0 wk
18 May
27 Jun
0 wk
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
2 May
8-12 wk
17 May
27 Jun
0 wk
27 May
17 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
19 Mar – 2 Apr
30 Mar
8-10 wk
28 May
2 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
30 May
5-8 wk
17 May
4 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
26 May
6-8 wk
17 May
7 Jul
0 wk
30 May
27 Jun
2 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
3 May
6-8 wk
17 May
14 Jun
0 wk
30 May
4 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
16 – 30 Apr
4-6 wk
28 May
2 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
19 May
8-10 wk
17 May
14 Jul
0 wk
27 May
4 Jul
1 wk after
Petunia
Petunia
Greenhouse
26 Feb – 26 Mar
20 Mar
8-12 wk
21 May
1 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Mar – 11 Apr
15 Apr
6-8 wk
23 May
27 May
1 wk after
29 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
9 – 23 Apr
19 Apr
4-6 wk
21 May
1 wk after
Common morning glory
Ipomoea purpurea
Season too short
23 Apr – 7 May
3-5 wk
28 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
9 – 23 Apr
25 Apr
4-6 wk
21 May
23 May
1 wk after
30 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
14 Mar – 11 Apr
8-12 wk
6 Jun
3 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
12 Apr
8-12 wk
17 May
7 Jun
0 wk
11 Jun
4 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
3 Apr
6-8 wk
17 May
0 wk
30 May
2 wk after
Safflower
Carthamus tinctorius
17 May
12 Jun
0 wk
18 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
23 May
6-8 wk
17 May
4 Jul
0 wk
1 May
24 Jun
2 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
30 May
4-6 wk
17 May
27 Jun
0 wk
30 May
17 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
5 – 19 Mar
10-12 wk
28 May
2 wk after
Sunflower
Helianthus annuus
9 – 16 May
20 May
3-4 wk
6 Jun
10 Jun
3 wk after
11 Jun
4 wk after
China aster
Callistephus chinensis
11 – 25 Apr
9 May
6-8 wk
6 Jun
20 Jun
3 wk after
29 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
22 Mar – 5 Apr
13 Apr
6-8 wk
17 May
25 May
0 wk
30 May
2 wk after
Hollyhock
Alcea rosea
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
30 May
2 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
12 Apr
8-12 wk
17 May
7 Jun
0 wk
11 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
26 Mar – 9 Apr
13 Apr
6-8 wk
21 May
25 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
28 Mar – 11 Apr
29 Apr
6-8 wk
23 May
10 Jun
1 wk after
29 Jun
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
2 Apr
8-10 wk
17 May
28 May
0 wk
11 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
19 Mar – 16 Apr
6-10 wk
28 May
2 wk after
California goldenpoppy
Eschscholzia californica
17 May
27 Jun
0 wk
18 May
17 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
19 Mar – 2 Apr
21 Apr
8-10 wk
28 May
16 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
3 May
6-8 wk
17 May
14 Jun
0 wk
30 May
4 Jun
2 wk after