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