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Rel. frost
Last spring frost (0°C) 17 May Frost 9 of 10 years · 20 years of data
Frost-free season 83 days 17 May – 8 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
9 Jun
5-7 wk
17 May
14 Jul
0 wk
18 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
21 Jun
4-6 wk
17 May
19 Jul
0 wk
18 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
6 Jun
5-7 wk
17 May
11 Jul
0 wk
17 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
25 Apr – 2 May
8 May
4-5 wk
30 May
5 Jun
2 wk after
11 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
28 May – 4 Jun
3-4 wk
25 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
22 Feb – 22 Mar
11 Mar
8-12 wk
17 May
0 wk
23 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 May
18 May
0 wk
18 May
0 wk
Maize
Zea mays
Season too short
19 – 26 Apr
3-4 wk
17 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
4 Jun
3-4 wk
19 May
25 Jun
0 wk
30 May
15 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
23 Jun
0 wk
17 May
13 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
6 Jun
5-7 wk
17 May
11 Jul
0 wk
17 May
1 Jul
0 wk
Potato
Solanum tuberosum
15 – 29 Apr
24 Apr
4-6 wk
27 May
1 wk after
27 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
8 Jun
5-7 wk
17 May
13 Jul
0 wk
18 May
3 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
28 Apr
3-4 wk
19 May
19 May
0 wk
30 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
18 Jun
4-6 wk
17 May
16 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
27 Jun
3-4 wk
17 May
18 Jul
0 wk
18 May
8 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
18 Jun
4-6 wk
17 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
8 May
2-4 wk
17 May
22 May
0 wk
17 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 May
18 May
0 wk
18 May
0 wk
Spinach
Spinacia oleracea
19 – 26 Apr
16 Jul
3-4 wk
17 May
6 Aug
0 wk
14 May
27 Jul
0 wk
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
19 Apr – 3 May
2-4 wk
17 May
0 wk
30 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
18 Jun
4-6 wk
17 May
16 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
12 Jun
3-4 wk
17 May
3 Jul
0 wk
18 May
23 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
11 – 25 Apr
4-6 wk
23 May
1 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
8 May
8-10 wk
17 May
3 Jul
0 wk
11 Jun
23 Jun
4 wk after
Dill
Anethum graveolens
18 May
25 Jun
0 wk
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
30 May
6-8 wk
17 May
11 Jul
0 wk
18 May
1 Jul
0 wk
Spearmint
Mentha spicata
22 Feb – 22 Mar
14 May
8-12 wk
17 May
9 Jul
0 wk
11 Jun
29 Jun
4 wk after
Coriander
Coriandrum sativum
17 May
15 Jul
0 wk
30 May
5 Jul
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
1 May
8-10 wk
19 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
6 May
8-10 wk
17 May
1 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
18 May
6-8 wk
17 May
29 Jun
0 wk
11 Jun
19 Jun
4 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
18 May
6-8 wk
17 May
29 Jun
0 wk
18 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
8 Feb – 8 Mar
20 Mar
10-14 wk
17 May
29 May
0 wk

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
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Cornflower
Centaurea cyanus
17 May
9 Jul
0 wk
18 May
29 Jun
0 wk
Statice
Limonium sinuatum
Season too short
8 – 22 Mar
8-10 wk
17 May
0 wk
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
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
18 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
28 Mar – 25 Apr
4 Apr
4-8 wk
23 May
1 wk after
23 May
1 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
28 Feb – 28 Mar
22 Apr
8-12 wk
23 May
17 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
4-6 wk
30 May
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
21 Mar
8-10 wk
19 May
0 wk
Love in a mist
Nigella damascena
17 May
18 Jun
0 wk
18 May
8 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
18 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
21 Mar
8-12 wk
19 May
0 wk
Cardoon
Cynara cardunculus
Season too short
22 Feb – 22 Mar
13 Mar
8-12 wk
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
1 wk after
Corn poppy
Papaver rhoeas
17 May
3 Jul
0 wk
18 May
23 Jun
0 wk
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
28 Apr
8-12 wk
17 May
23 Jun
0 wk
27 May
13 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
14 – 28 Mar
8-10 wk
23 May
1 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
25 May
5-8 wk
17 May
29 Jun
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
22 May
6-8 wk
17 May
3 Jul
0 wk
30 May
23 Jun
2 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
30 Apr
6-8 wk
17 May
11 Jun
0 wk
30 May
1 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
11 – 25 Apr
4-6 wk
23 May
1 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
16 May
8-10 wk
17 May
11 Jul
0 wk
27 May
1 Jul
1 wk after
Petunia
Petunia
Season too short
22 Feb – 22 Mar
25 Feb
8-12 wk
17 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
4 Apr
6-8 wk
19 May
0 wk
29 Jun
6 wk after
Common zinnia
Zinnia elegans
Season too short
5 – 19 Apr
4-6 wk
17 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
18 Apr – 2 May
3-5 wk
23 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
5 – 19 Apr
4-6 wk
17 May
0 wk
30 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
7 Mar – 4 Apr
8-12 wk
30 May
2 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
8 Apr
8-12 wk
17 May
3 Jun
0 wk
11 Jun
4 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
31 Mar
6-8 wk
17 May
0 wk
30 May
2 wk after
Safflower
Carthamus tinctorius
17 May
7 Jun
0 wk
18 May
28 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
20 May
6-8 wk
17 May
1 Jul
0 wk
1 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
26 May
4-6 wk
17 May
23 Jun
0 wk
30 May
13 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
28 Feb – 14 Mar
10-12 wk
23 May
1 wk after
Sunflower
Helianthus annuus
Fleece
25 Apr – 2 May
28 May
3-4 wk
23 May
18 Jun
1 wk after
30 May
8 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
28 Mar – 11 Apr
17 May
6-8 wk
23 May
28 Jun
1 wk after
11 Jun
18 Jun
4 wk after
Annual phlox
Phlox drummondii
Season too short
22 Mar – 5 Apr
6-8 wk
17 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
8 Apr
8-12 wk
17 May
3 Jun
0 wk
11 Jun
4 wk after
African marigold
Tagetes erecta
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
12 Apr
6-8 wk
19 May
24 May
0 wk
29 Jun
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
29 Mar
8-10 wk
17 May
24 May
0 wk
11 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
14 Mar – 11 Apr
6-10 wk
23 May
1 wk after
California goldenpoppy
Eschscholzia californica
17 May
28 Jun
0 wk
18 May
18 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
14 – 28 Mar
10 Apr
8-10 wk
23 May
5 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
30 Apr
6-8 wk
17 May
11 Jun
0 wk
30 May
1 Jun
2 wk after