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Rel. frost
Last spring frost (0°C) 2 May Frost 9 of 10 years · 20 years of data
Frost-free season 138 days 2 May – 17 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)
14 – 28 Mar
16 Jun
5-7 wk
2 May
21 Jul
0 wk
6 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
21 Mar – 4 Apr
28 Jun
4-6 wk
2 May
26 Jul
0 wk
6 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Mar
11 Jun
5-7 wk
2 May
16 Jul
0 wk
2 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
2 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 May
27 May
4-5 wk
7 Jun
24 Jun
5 wk after
20 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 May
3-4 wk
17 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Feb – 7 Mar
24 Mar
8-12 wk
2 May
19 May
0 wk
23 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 May
8 Jun
1 wk after
6 May
29 May
1 wk after
Maize
Zea mays
Season too short
4 – 11 Apr
3-4 wk
2 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
11 – 18 Apr
28 Jun
3-4 wk
9 May
19 Jul
1 wk after
23 May
9 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
2 May
6 Jul
0 wk
2 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Mar
11 Jun
5-7 wk
2 May
16 Jul
0 wk
2 May
6 Jul
0 wk
Potato
Solanum tuberosum
6 – 20 Apr
26 May
4-6 wk
18 May
23 Jun
2 wk after
18 May
13 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Mar
21 Jun
5-7 wk
2 May
26 Jul
0 wk
6 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
17 – 24 Apr
5 May
3-4 wk
15 May
26 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
11 – 18 Apr
8 Jun
3-4 wk
9 May
29 Jun
1 wk after
23 May
19 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
21 Mar – 4 Apr
23 Jun
4-6 wk
2 May
21 Jul
0 wk
Lettuce
Lactuca sativa
4 – 11 Apr
10 Jul
3-4 wk
2 May
31 Jul
0 wk
6 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
21 Mar – 4 Apr
23 Jun
4-6 wk
2 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Apr
31 May
2-4 wk
2 May
14 Jun
0 wk
2 May
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
8 Jun
1 wk after
6 May
29 May
1 wk after
Spinach
Spinacia oleracea
4 – 11 Apr
25 Jul
3-4 wk
2 May
15 Aug
0 wk
28 Apr
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
7 – 21 Mar
6-8 wk
2 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
4 – 18 Apr
7 May
2-4 wk
2 May
21 May
0 wk
23 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
21 Mar – 4 Apr
23 Jun
4-6 wk
2 May
21 Jul
0 wk
Garden pea
Pisum sativum
4 – 11 Apr
25 Jun
3-4 wk
2 May
16 Jul
0 wk
6 May
6 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
Greenhouse
3 – 17 Apr
13 Apr
4-6 wk
15 May
2 wk after
Lemon balm
Melissa officinalis
21 Feb – 7 Mar
21 May
8-10 wk
2 May
16 Jul
0 wk
6 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
6 May
19 Jul
1 wk after
Wild chives
Allium schoenoprasum
7 – 21 Mar
4 Jun
6-8 wk
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Spearmint
Mentha spicata
7 Feb – 7 Mar
21 May
8-12 wk
2 May
16 Jul
0 wk
6 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
2 May
8 Aug
0 wk
23 May
29 Jul
3 wk after
Garden sage
Salvia officinalis
28 Feb – 14 Mar
6 May
8-10 wk
9 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
21 Feb – 7 Mar
11 May
8-10 wk
2 May
6 Jul
0 wk
Oregano
Origanum vulgare
7 – 21 Mar
25 May
6-8 wk
2 May
6 Jul
0 wk
6 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
7 – 21 Mar
25 May
6-8 wk
2 May
6 Jul
0 wk
6 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
31 Jan – 28 Feb
26 Mar
10-14 wk
9 May
4 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
Greenhouse
17 – 24 Apr
20 Apr
3-4 wk
15 May
2 wk after
Cornflower
Centaurea cyanus
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
6 – 20 Mar
26 Mar
8-10 wk
15 May
21 May
2 wk after
Sweet William
Dianthus barbatus
7 – 21 Mar
6-8 wk
2 May
0 wk
18 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
20 Mar – 3 Apr
9 Apr
6-8 wk
15 May
21 May
2 wk after
30 Jun
8 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
14 – 28 Mar
16 Apr
6-8 wk
9 May
28 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
11 Apr – 9 May
4-8 wk
6 Jun
5 wk after
6 Jun
5 wk after
Foxglove
Digitalis purpurea
21 Feb – 7 Mar
8-10 wk
2 May
0 wk
23 May
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
1 – 29 Mar
1 May
8-12 wk
24 May
26 Jun
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
20 Mar – 3 Apr
19 Apr
6-8 wk
15 May
31 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
12 – 26 Apr
4-6 wk
24 May
3 wk after
Chinese lantern
Physalis alkekengi
28 Feb – 14 Mar
14 Apr
8-10 wk
9 May
9 Jun
1 wk after
Love in a mist
Nigella damascena
2 May
1 Jul
0 wk
6 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
20 Mar – 3 Apr
30 Mar
6-8 wk
15 May
2 wk after
30 Jun
8 wk after
Purple-top vervain
Verbena bonariensis
14 Feb – 14 Mar
14 Apr
8-12 wk
9 May
9 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
20 Feb – 20 Mar
22 Mar
8-12 wk
15 May
17 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
20 Feb – 20 Mar
6 Mar
8-12 wk
15 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
20 Mar – 3 Apr
20 Mar
6-8 wk
15 May
2 wk after
Corn poppy
Papaver rhoeas
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
7 Feb – 7 Mar
11 May
8-12 wk
2 May
6 Jul
0 wk
18 May
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
15 – 29 Mar
5 Apr
8-10 wk
24 May
31 May
3 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Mar
1 Jun
5-8 wk
2 May
6 Jul
0 wk
Stock
Matthiola incana
7 – 21 Mar
4 Jun
6-8 wk
2 May
16 Jul
0 wk
23 May
6 Jul
3 wk after
Wormwood
Artemisia absinthium
7 – 21 Mar
5 May
6-8 wk
2 May
16 Jun
0 wk
23 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
3 – 17 Apr
4-6 wk
15 May
2 wk after
Garden pansy
Viola × wittrockiana
21 Feb – 7 Mar
21 May
8-10 wk
2 May
16 Jul
0 wk
18 May
6 Jul
2 wk after
Petunia
Petunia
Fleece
20 Feb – 20 Mar
26 Mar
8-12 wk
15 May
21 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
14 – 28 Mar
28 Apr
6-8 wk
9 May
9 Jun
1 wk after
20 Jun
7 wk after
Common zinnia
Zinnia elegans
Fleece
3 – 17 Apr
13 Apr
4-6 wk
15 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
10 – 24 Apr
20 Apr
3-5 wk
15 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
3 – 17 Apr
30 Apr
4-6 wk
15 May
28 May
2 wk after
6 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
1 – 29 Mar
5 Apr
8-12 wk
24 May
31 May
3 wk after
Bee balm
Monarda didyma
7 Feb – 7 Mar
21 Apr
8-12 wk
2 May
16 Jun
0 wk
6 Jun
6 Jun
5 wk after
Yarrow
Achillea millefolium
7 – 21 Mar
5 Apr
6-8 wk
2 May
17 May
0 wk
23 May
3 wk after
Safflower
Carthamus tinctorius
2 May
16 Jun
0 wk
6 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
7 – 21 Mar
25 May
6-8 wk
2 May
6 Jul
0 wk
14 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
21 Mar – 4 Apr
8 Jun
4-6 wk
2 May
6 Jul
0 wk
23 May
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
20 Feb – 6 Mar
27 Feb
10-12 wk
15 May
2 wk after
Sunflower
Helianthus annuus
26 Apr – 3 May
3 Jun
3-4 wk
24 May
24 Jun
3 wk after
6 Jun
14 Jun
5 wk after
China aster
Callistephus chinensis
29 Mar – 12 Apr
23 May
6-8 wk
24 May
4 Jul
3 wk after
20 Jun
24 Jun
7 wk after
Annual phlox
Phlox drummondii
Fleece
7 – 21 Mar
19 Apr
6-8 wk
2 May
31 May
0 wk
6 Jun
5 wk after
Hollyhock
Alcea rosea
7 – 21 Mar
6-8 wk
2 May
0 wk
23 May
3 wk after
Alpine delphinium
Delphinium elatum
7 Feb – 7 Mar
21 Apr
8-12 wk
2 May
16 Jun
0 wk
6 Jun
6 Jun
5 wk after
African marigold
Tagetes erecta
Fleece
20 Mar – 3 Apr
19 Apr
6-8 wk
15 May
31 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Mar
13 May
6-8 wk
9 May
24 Jun
1 wk after
20 Jun
7 wk after
Wood sage
Salvia nemorosa
21 Feb – 7 Mar
11 Apr
8-10 wk
2 May
6 Jun
0 wk
6 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
6 Mar – 3 Apr
30 Mar
6-10 wk
15 May
2 wk after
California goldenpoppy
Eschscholzia californica
2 May
16 Jul
0 wk
6 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
15 – 29 Mar
29 Apr
8-10 wk
24 May
24 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
7 – 21 Mar
5 May
6-8 wk
2 May
16 Jun
0 wk
23 May
6 Jun
3 wk after