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Rel. frost
Last spring frost (0°C) 5 May Frost 9 of 10 years · 20 years of data
Frost-free season 118 days 5 May – 31 Aug
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)
17 – 31 Mar
12 Jun
5-7 wk
5 May
17 Jul
0 wk
6 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
24 Jun
4-6 wk
5 May
22 Jul
0 wk
6 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Mar
7 Jun
5-7 wk
5 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
1 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 May
12 May
4-5 wk
10 Jun
5 wk after
17 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
18 – 25 May
3-4 wk
15 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Feb – 10 Mar
10 Mar
8-12 wk
5 May
5 May
0 wk
18 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 May
25 May
0 wk
6 May
15 May
0 wk
Maize
Zea mays
Season too short
9 – 16 Apr
3-4 wk
7 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
16 Jun
3-4 wk
10 May
7 Jul
1 wk after
18 May
27 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
1 Jul
0 wk
5 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Mar
7 Jun
5-7 wk
5 May
12 Jul
0 wk
5 May
2 Jul
0 wk
Potato
Solanum tuberosum
3 – 17 Apr
28 Apr
4-6 wk
15 May
26 May
1 wk after
15 May
16 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Mar
16 Jun
5-7 wk
5 May
21 Jul
0 wk
6 May
11 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
17 – 24 Apr
29 Apr
3-4 wk
15 May
20 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Apr
9 May
3-4 wk
10 May
30 May
1 wk after
18 May
20 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
19 Jun
4-6 wk
5 May
17 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Apr
5 Jul
3-4 wk
5 May
26 Jul
0 wk
6 May
16 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Mar – 7 Apr
19 Jun
4-6 wk
5 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Apr
13 May
2-4 wk
5 May
27 May
0 wk
5 May
17 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
25 May
0 wk
6 May
15 May
0 wk
Spinach
Spinacia oleracea
7 – 14 Apr
21 Jul
3-4 wk
5 May
11 Aug
0 wk
2 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
12 – 26 Mar
6-8 wk
7 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
9 – 23 Apr
1 May
2-4 wk
7 May
15 May
0 wk
18 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
19 Jun
4-6 wk
5 May
17 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Apr
20 Jun
3-4 wk
5 May
11 Jul
0 wk
6 May
1 Jul
0 wk

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