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Method
Rel. frost
Last spring frost (0°C) 12 May Frost 9 of 10 years · 20 years of data
Frost-free season 124 days 12 May – 13 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)
24 Mar – 7 Apr
14 Jun
5-7 wk
12 May
19 Jul
0 wk
16 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
26 Jun
4-6 wk
12 May
24 Jul
0 wk
16 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
9 Jun
5-7 wk
12 May
14 Jul
0 wk
12 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Florence Fennel
Foeniculum vulgare
13 – 20 May
18 May
4-5 wk
17 Jun
5 wk after
30 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
22 Mar
8-12 wk
12 May
17 May
0 wk
2 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
6 Jun
1 wk after
16 May
27 May
1 wk after
Maize
Zea mays
Season too short
16 – 23 Apr
3-4 wk
14 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
25 Jun
3-4 wk
17 May
16 Jul
1 wk after
2 Jun
6 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
4 Jul
0 wk
12 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
9 Jun
5-7 wk
12 May
14 Jul
0 wk
12 May
4 Jul
0 wk
Potato
Solanum tuberosum
16 – 30 Apr
21 May
4-6 wk
28 May
18 Jun
2 wk after
28 May
8 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
19 Jun
5-7 wk
12 May
24 Jul
0 wk
16 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
27 May
3-4 wk
17 May
17 Jun
1 wk after
2 Jun
7 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
21 Jun
4-6 wk
12 May
19 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
8 Jul
3-4 wk
12 May
29 Jul
0 wk
16 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
21 Jun
4-6 wk
12 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
25 May
2-4 wk
12 May
8 Jun
0 wk
12 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 May
6 Jun
1 wk after
16 May
27 May
1 wk after
Spinach
Spinacia oleracea
14 – 21 Apr
23 Jul
3-4 wk
12 May
13 Aug
0 wk
8 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
16 – 30 Apr
2-4 wk
14 May
0 wk
2 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
21 Jun
4-6 wk
12 May
19 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
23 Jun
3-4 wk
12 May
14 Jul
0 wk
16 May
4 Jul
1 wk after

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