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Rel. frost
Last spring frost (0°C) 1 May Frost 9 of 10 years · 20 years of data
Frost-free season 130 days 1 May – 8 Sep
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)
13 – 27 Mar
15 Jun
5-7 wk
1 May
20 Jul
0 wk
5 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
20 Mar – 3 Apr
27 Jun
4-6 wk
1 May
25 Jul
0 wk
5 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
19 Feb – 19 Mar
8-12 wk
14 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
13 – 27 Mar
10 Jun
5-7 wk
1 May
15 Jul
0 wk
1 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
16 – 23 Apr
3-4 wk
14 May
2 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 May
15 May
4-5 wk
6 Jun
12 Jun
5 wk after
19 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
19 – 26 May
3-4 wk
16 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
6 Feb – 6 Mar
19 Mar
8-12 wk
1 May
14 May
0 wk
22 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
5 May
3 Jun
1 wk after
5 May
24 May
1 wk after
Maize
Zea mays
Season too short
3 – 10 Apr
3-4 wk
1 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
26 Jun
3-4 wk
8 May
17 Jul
1 wk after
22 May
7 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 May
5 Jul
0 wk
1 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
13 – 27 Mar
10 Jun
5-7 wk
1 May
15 Jul
0 wk
1 May
5 Jul
0 wk
Potato
Solanum tuberosum
5 – 19 Apr
19 May
4-6 wk
17 May
16 Jun
2 wk after
17 May
6 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
13 – 27 Mar
20 Jun
5-7 wk
1 May
25 Jul
0 wk
5 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
16 – 23 Apr
29 Apr
3-4 wk
14 May
20 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
26 May
3-4 wk
8 May
16 Jun
1 wk after
22 May
6 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Mar – 3 Apr
22 Jun
4-6 wk
1 May
20 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 Apr
9 Jul
3-4 wk
1 May
30 Jul
0 wk
5 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Mar – 3 Apr
22 Jun
4-6 wk
1 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Apr
29 May
2-4 wk
1 May
12 Jun
0 wk
1 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
5 May
3 Jun
1 wk after
5 May
24 May
1 wk after
Spinach
Spinacia oleracea
3 – 10 Apr
24 Jul
3-4 wk
1 May
14 Aug
0 wk
27 Apr
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
6 – 20 Mar
6-8 wk
1 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
3 – 17 Apr
1 May
2-4 wk
1 May
15 May
0 wk
22 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Mar – 3 Apr
22 Jun
4-6 wk
1 May
20 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 Apr
24 Jun
3-4 wk
1 May
15 Jul
0 wk
5 May
5 Jul
1 wk after

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