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Rel. frost
Last spring frost (0°C) 11 May Frost 9 of 10 years · 20 years of data
Frost-free season 116 days 11 May – 4 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)
23 Mar – 6 Apr
17 Jun
5-7 wk
11 May
22 Jul
0 wk
4 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
30 Mar – 13 Apr
29 Jun
4-6 wk
11 May
27 Jul
0 wk
4 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Mar – 6 Apr
12 Jun
5-7 wk
11 May
17 Jul
0 wk
29 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 May
15 May
4-5 wk
16 Jun
5 wk after
16 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
24 – 31 May
3-4 wk
21 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Feb – 16 Mar
18 Mar
8-12 wk
11 May
13 May
0 wk
21 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 May
2 Jun
1 wk before
4 May
23 May
1 wk before
Maize
Zea mays
Season too short
15 – 22 Apr
3-4 wk
13 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Apr
17 Jun
3-4 wk
16 May
8 Jul
1 wk after
21 May
28 Jun
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 May
30 Jun
0 wk
29 Apr
20 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Mar – 6 Apr
12 Jun
5-7 wk
11 May
17 Jul
0 wk
29 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
4 – 18 Apr
17 May
4-6 wk
16 May
14 Jun
1 wk after
16 May
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Mar – 6 Apr
15 Jun
5-7 wk
11 May
20 Jul
0 wk
4 May
10 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Apr
21 May
3-4 wk
16 May
11 Jun
1 wk after
21 May
1 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Apr
4 Jul
3-4 wk
11 May
25 Jul
0 wk
4 May
15 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 Apr
22 May
2-4 wk
29 Apr
5 Jun
2 wk before
29 Apr
26 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 May
2 Jun
1 wk before
4 May
23 May
1 wk before
Spinach
Spinacia oleracea
13 – 20 Apr
26 Jul
3-4 wk
11 May
16 Aug
0 wk
23 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
15 – 29 Apr
2-4 wk
13 May
0 wk
21 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Apr
19 Jun
3-4 wk
11 May
10 Jul
0 wk
4 May
30 Jun
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
Season too short
9 – 23 Apr
4-6 wk
21 May
1 wk after
Lemon balm
Melissa officinalis
2 – 16 Mar
15 May
8-10 wk
11 May
10 Jul
0 wk
1 Jun
30 Jun
3 wk after
Dill
Anethum graveolens
4 May
8 Jul
1 wk before
Wild chives
Allium schoenoprasum
16 – 30 Mar
5 Jun
6-8 wk
11 May
17 Jul
0 wk
4 May
7 Jul
1 wk before
Spearmint
Mentha spicata
16 Feb – 16 Mar
22 May
8-12 wk
11 May
17 Jul
0 wk
1 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
11 May
28 Jul
0 wk
21 May
18 Jul
1 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
7 May
8-10 wk
16 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Mar
12 May
8-10 wk
11 May
7 Jul
0 wk
Oregano
Origanum vulgare
16 – 30 Mar
26 May
6-8 wk
11 May
7 Jul
0 wk
1 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
16 – 30 Mar
26 May
6-8 wk
11 May
7 Jul
0 wk
4 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
16 Mar
10-14 wk
16 May
25 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
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Cornflower
Centaurea cyanus
11 May
17 Jul
0 wk
4 May
7 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
4 – 18 Mar
28 Mar
8-10 wk
13 May
23 May
0 wk
Sweet William
Dianthus barbatus
16 – 30 Mar
6-8 wk
11 May
0 wk
16 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
18 Mar – 1 Apr
11 Apr
6-8 wk
13 May
23 May
0 wk
8 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
21 Mar – 4 Apr
3 Apr
6-8 wk
16 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
26 Mar – 23 Apr
17 Apr
4-8 wk
21 May
1 wk after
21 May
1 wk after
Foxglove
Digitalis purpurea
2 – 16 Mar
8-10 wk
11 May
0 wk
21 May
1 wk after
Busy lizzie
Impatiens walleriana
Fleece
8 Mar – 5 Apr
30 Mar
8-12 wk
31 May
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
18 Mar – 1 Apr
21 Apr
6-8 wk
13 May
2 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
4-6 wk
31 May
3 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Mar
3 Apr
8-10 wk
16 May
29 May
1 wk after
Love in a mist
Nigella damascena
11 May
25 Jun
0 wk
4 May
15 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
18 Mar – 1 Apr
1 Apr
6-8 wk
13 May
13 May
0 wk
8 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
3 Apr
8-12 wk
16 May
29 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
18 Feb – 18 Mar
23 Mar
8-12 wk
13 May
18 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
1 wk after
Corn poppy
Papaver rhoeas
11 May
10 Jul
0 wk
4 May
30 Jun
1 wk before
Snapdragon
Antirrhinum majus
16 Feb – 16 Mar
5 May
8-12 wk
11 May
30 Jun
0 wk
16 May
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
7 Apr
8-10 wk
21 May
2 Jun
1 wk after
Sweet pea
Lathyrus odoratus
16 Mar – 6 Apr
2 Jun
5-8 wk
11 May
7 Jul
0 wk
Stock
Matthiola incana
16 – 30 Mar
29 May
6-8 wk
11 May
10 Jul
0 wk
21 May
30 Jun
1 wk after
Wormwood
Artemisia absinthium
16 – 30 Mar
6 May
6-8 wk
11 May
17 Jun
0 wk
21 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
9 – 23 Apr
4-6 wk
21 May
1 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Mar
22 May
8-10 wk
11 May
17 Jul
0 wk
16 May
7 Jul
1 wk after
Petunia
Petunia
Greenhouse
18 Feb – 18 Mar
28 Mar
8-12 wk
13 May
23 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
17 Apr
6-8 wk
16 May
29 May
1 wk after
16 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
1 – 15 Apr
27 Apr
4-6 wk
13 May
25 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
16 – 30 Apr
3-5 wk
21 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
9 – 23 Apr
17 Apr
4-6 wk
21 May
1 wk after
1 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
3 wk after
Bee balm
Monarda didyma
16 Feb – 16 Mar
15 Apr
8-12 wk
11 May
10 Jun
0 wk
1 Jun
3 wk after
Yarrow
Achillea millefolium
16 – 30 Mar
6 Apr
6-8 wk
11 May
18 May
0 wk
21 May
1 wk after
Safflower
Carthamus tinctorius
11 May
17 Jun
0 wk
4 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
16 – 30 Mar
26 May
6-8 wk
11 May
7 Jul
0 wk
2 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
30 Mar – 13 Apr
2 Jun
4-6 wk
11 May
30 Jun
0 wk
21 May
20 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
26 Feb – 12 Mar
10-12 wk
21 May
1 wk after
Sunflower
Helianthus annuus
3 – 10 May
24 May
3-4 wk
31 May
14 Jun
3 wk after
1 Jun
4 Jun
3 wk after
China aster
Callistephus chinensis
5 – 19 Apr
13 May
6-8 wk
31 May
24 Jun
3 wk after
16 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
16 – 30 Mar
21 Apr
6-8 wk
11 May
2 Jun
0 wk
21 May
23 May
1 wk after
Hollyhock
Alcea rosea
16 – 30 Mar
6-8 wk
11 May
0 wk
21 May
1 wk after
Alpine delphinium
Delphinium elatum
16 Feb – 16 Mar
15 Apr
8-12 wk
11 May
10 Jun
0 wk
1 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
18 Mar – 1 Apr
21 Apr
6-8 wk
13 May
2 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
3 May
6-8 wk
16 May
14 Jun
1 wk after
16 Jun
5 wk after
Wood sage
Salvia nemorosa
2 – 16 Mar
5 Apr
8-10 wk
11 May
31 May
0 wk
1 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
12 Mar – 9 Apr
6-10 wk
21 May
1 wk after
California goldenpoppy
Eschscholzia californica
11 May
8 Jul
0 wk
4 May
28 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
17 Apr
8-10 wk
31 May
12 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
16 – 30 Mar
6 May
6-8 wk
11 May
17 Jun
0 wk
21 May
7 Jun
1 wk after