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