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

Herbs

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