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Method
Rel. frost
Last spring frost (0°C) 3 May Frost 9 of 10 years · 20 years of data
Frost-free season 124 days 3 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)
15 – 29 Mar
17 Jun
5-7 wk
3 May
22 Jul
0 wk
26 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Mar – 5 Apr
29 Jun
4-6 wk
3 May
27 Jul
0 wk
26 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 – 29 Mar
12 Jun
5-7 wk
3 May
17 Jul
0 wk
21 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
18 – 25 Apr
3-4 wk
16 May
2 wk after
Florence Fennel
Foeniculum vulgare
4 – 11 May
17 May
4-5 wk
8 Jun
14 Jun
5 wk after
8 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
21 – 28 May
3-4 wk
18 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Feb – 8 Mar
20 Mar
8-12 wk
3 May
15 May
0 wk
13 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Apr
4 Jun
1 wk before
26 Apr
25 May
1 wk before
Maize
Zea mays
Season too short
5 – 12 Apr
3-4 wk
3 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
28 Jun
3-4 wk
10 May
19 Jul
1 wk after
13 May
9 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 May
7 Jul
0 wk
21 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 – 29 Mar
12 Jun
5-7 wk
3 May
17 Jul
0 wk
21 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
27 Mar – 10 Apr
17 May
4-6 wk
8 May
14 Jun
1 wk after
8 May
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 – 29 Mar
22 Jun
5-7 wk
3 May
27 Jul
0 wk
26 Apr
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
18 – 25 Apr
3-4 wk
16 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Apr
21 May
3-4 wk
10 May
11 Jun
1 wk after
13 May
1 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Mar – 5 Apr
24 Jun
4-6 wk
3 May
22 Jul
0 wk
Lettuce
Lactuca sativa
5 – 12 Apr
11 Jul
3-4 wk
3 May
1 Aug
0 wk
26 Apr
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Mar – 5 Apr
24 Jun
4-6 wk
3 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Mar – 7 Apr
23 May
2-4 wk
21 Apr
6 Jun
2 wk before
21 Apr
27 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 Apr
4 Jun
1 wk before
26 Apr
25 May
1 wk before
Spinach
Spinacia oleracea
5 – 12 Apr
26 Jul
3-4 wk
3 May
16 Aug
0 wk
15 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
8 – 22 Mar
6-8 wk
3 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
5 – 19 Apr
7 Apr
2-4 wk
3 May
0 wk
13 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Mar – 5 Apr
24 Jun
4-6 wk
3 May
22 Jul
0 wk
Garden pea
Pisum sativum
5 – 12 Apr
26 Jun
3-4 wk
3 May
17 Jul
0 wk
26 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
Season too short
4 – 18 Apr
4-6 wk
16 May
2 wk after
Lemon balm
Melissa officinalis
22 Feb – 8 Mar
22 May
8-10 wk
3 May
17 Jul
0 wk
24 May
7 Jul
3 wk after
Dill
Anethum graveolens
26 Apr
19 Jul
1 wk before
Wild chives
Allium schoenoprasum
8 – 22 Mar
5 Jun
6-8 wk
3 May
17 Jul
0 wk
26 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
8 Feb – 8 Mar
22 May
8-12 wk
3 May
17 Jul
0 wk
24 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
3 May
8 Aug
0 wk
13 May
29 Jul
1 wk after
Garden sage
Salvia officinalis
1 – 15 Mar
7 May
8-10 wk
10 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
22 Feb – 8 Mar
12 May
8-10 wk
3 May
7 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Mar
26 May
6-8 wk
3 May
7 Jul
0 wk
24 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
8 – 22 Mar
26 May
6-8 wk
3 May
7 Jul
0 wk
26 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
1 Feb – 1 Mar
18 Mar
10-14 wk
10 May
27 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
18 – 25 Apr
3-4 wk
16 May
2 wk after
Cornflower
Centaurea cyanus
3 May
17 Jul
0 wk
26 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
22 Feb – 8 Mar
2 Apr
8-10 wk
3 May
28 May
0 wk
Sweet William
Dianthus barbatus
8 – 22 Mar
6-8 wk
3 May
0 wk
8 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
8 – 22 Mar
16 Apr
6-8 wk
3 May
28 May
0 wk
31 May
4 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
15 – 29 Mar
6 Apr
6-8 wk
10 May
18 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
18 Mar – 15 Apr
20 Apr
4-8 wk
13 May
18 May
1 wk after
13 May
1 wk after
Foxglove
Digitalis purpurea
22 Feb – 8 Mar
8-10 wk
3 May
0 wk
13 May
1 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
21 Feb – 21 Mar
18 May
8-12 wk
16 May
13 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
8 – 22 Mar
26 Apr
6-8 wk
3 May
7 Jun
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
14 Apr
8-10 wk
10 May
9 Jun
1 wk after
Love in a mist
Nigella damascena
3 May
2 Jul
0 wk
26 Apr
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
8 – 22 Mar
6 Apr
6-8 wk
3 May
18 May
0 wk
31 May
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
21 Feb – 21 Mar
23 Mar
8-12 wk
16 May
18 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
2 wk after
Corn poppy
Papaver rhoeas
3 May
17 Jul
0 wk
26 Apr
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
8 Feb – 8 Mar
12 May
8-12 wk
3 May
7 Jul
0 wk
8 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
7 – 21 Mar
12 Apr
8-10 wk
16 May
7 Jun
2 wk after
Sweet pea
Lathyrus odoratus
8 – 29 Mar
2 Jun
5-8 wk
3 May
7 Jul
0 wk
Stock
Matthiola incana
8 – 22 Mar
5 Jun
6-8 wk
3 May
17 Jul
0 wk
13 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
8 – 22 Mar
6 May
6-8 wk
3 May
17 Jun
0 wk
13 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
4 – 18 Apr
4-6 wk
16 May
2 wk after
Garden pansy
Viola × wittrockiana
22 Feb – 8 Mar
22 May
8-10 wk
3 May
17 Jul
0 wk
8 May
7 Jul
1 wk after
Petunia
Petunia
Greenhouse
8 Feb – 8 Mar
2 Apr
8-12 wk
3 May
28 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
15 – 29 Mar
28 Apr
6-8 wk
10 May
9 Jun
1 wk after
8 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
22 Mar – 5 Apr
30 Apr
4-6 wk
3 May
28 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
11 – 25 Apr
3-5 wk
16 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
4 – 18 Apr
20 Apr
4-6 wk
16 May
18 May
2 wk after
24 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
8 Feb – 8 Mar
22 Apr
8-12 wk
3 May
17 Jun
0 wk
24 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
8 – 22 Mar
6 Apr
6-8 wk
3 May
18 May
0 wk
13 May
1 wk after
Safflower
Carthamus tinctorius
3 May
17 Jun
0 wk
26 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Mar
26 May
6-8 wk
3 May
7 Jul
0 wk
25 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
22 Mar – 5 Apr
9 Jun
4-6 wk
3 May
7 Jul
0 wk
13 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
21 Feb – 7 Mar
10-12 wk
16 May
2 wk after
Sunflower
Helianthus annuus
27 Apr – 4 May
26 May
3-4 wk
25 May
16 Jun
3 wk after
24 May
6 Jun
3 wk after
China aster
Callistephus chinensis
30 Mar – 13 Apr
15 May
6-8 wk
25 May
26 Jun
3 wk after
8 Jun
16 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
8 – 22 Mar
26 Apr
6-8 wk
3 May
7 Jun
0 wk
13 May
28 May
1 wk after
Hollyhock
Alcea rosea
8 – 22 Mar
6-8 wk
3 May
0 wk
13 May
1 wk after
Alpine delphinium
Delphinium elatum
8 Feb – 8 Mar
22 Apr
8-12 wk
3 May
17 Jun
0 wk
24 May
7 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
8 – 22 Mar
26 Apr
6-8 wk
3 May
7 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
15 – 29 Mar
5 May
6-8 wk
10 May
16 Jun
1 wk after
8 Jun
5 wk after
Wood sage
Salvia nemorosa
22 Feb – 8 Mar
12 Apr
8-10 wk
3 May
7 Jun
0 wk
24 May
28 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
7 Mar – 4 Apr
6-10 wk
16 May
2 wk after
California goldenpoppy
Eschscholzia californica
3 May
17 Jul
0 wk
26 Apr
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
16 – 30 Mar
19 Apr
8-10 wk
25 May
14 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Mar
6 May
6-8 wk
3 May
17 Jun
0 wk
13 May
7 Jun
1 wk after