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Method
Rel. frost
Last spring frost (0°C) 9 May Frost 3 of 4 years · 20 years of data
Frost-free season 137 days 9 May – 23 Sep
Probability that frost is over

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