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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 3 of 4 years · 20 years of data
Frost-free season 136 days 7 May – 20 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)
19 Mar – 2 Apr
12 Jun
5-7 wk
7 May
17 Jul
0 wk
8 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
24 Jun
4-6 wk
7 May
22 Jul
0 wk
8 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
23 Feb – 23 Mar
31 Mar
8-12 wk
18 May
26 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
7 Jun
5-7 wk
7 May
12 Jul
0 wk
7 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
13 – 20 May
21 May
3-4 wk
10 Jun
11 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 May
23 May
4-5 wk
10 Jun
20 Jun
5 wk after
19 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 May
3-4 wk
17 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
22 Mar
8-12 wk
7 May
17 May
0 wk
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
8 May
6 Jun
0 wk
8 May
27 May
0 wk
Maize
Zea mays
29 Apr – 6 May
11 May
3-4 wk
27 May
1 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 Apr
30 Jun
3-4 wk
13 May
21 Jul
1 wk after
20 May
11 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
2 Jul
0 wk
7 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
7 Jun
5-7 wk
7 May
12 Jul
0 wk
7 May
2 Jul
0 wk
Potato
Solanum tuberosum
5 – 19 Apr
22 May
4-6 wk
17 May
19 Jun
1 wk after
17 May
9 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
17 Jun
5-7 wk
7 May
22 Jul
0 wk
8 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
13 – 20 May
30 May
3-4 wk
10 Jun
20 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 Apr
26 May
3-4 wk
13 May
16 Jun
1 wk after
20 May
6 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
19 Jun
4-6 wk
7 May
17 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
6 Jul
3-4 wk
7 May
27 Jul
0 wk
8 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
19 Jun
4-6 wk
7 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Apr
27 May
2-4 wk
7 May
10 Jun
0 wk
7 May
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
8 May
6 Jun
0 wk
8 May
27 May
0 wk
Spinach
Spinacia oleracea
9 – 16 Apr
21 Jul
3-4 wk
7 May
11 Aug
0 wk
4 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
1 – 15 Jun
4-6 wk
13 Jul
10 wk after
Garden tomato
Solanum lycopersicum
1 – 15 Apr
20 Apr
6-8 wk
27 May
1 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
29 Apr – 13 May
1 Jun
2-4 wk
27 May
15 Jun
3 wk after
19 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
19 Jun
4-6 wk
7 May
17 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
21 Jun
3-4 wk
7 May
12 Jul
0 wk
8 May
2 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
29 Apr – 13 May
8 May
4-6 wk
10 Jun
5 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
17 May
8-10 wk
7 May
12 Jul
0 wk
1 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
8 May
21 Jul
0 wk
Wild chives
Allium schoenoprasum
12 – 26 Mar
31 May
6-8 wk
7 May
12 Jul
0 wk
8 May
2 Jul
0 wk
Spearmint
Mentha spicata
12 Feb – 12 Mar
17 May
8-12 wk
7 May
12 Jul
0 wk
1 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
7 May
10 Aug
0 wk
20 May
31 Jul
2 wk after
Garden sage
Salvia officinalis
4 – 18 Mar
2 May
8-10 wk
13 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
7 May
8-10 wk
7 May
2 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
21 May
6-8 wk
7 May
2 Jul
0 wk
1 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
21 May
6-8 wk
7 May
2 Jul
0 wk
8 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
4 Feb – 4 Mar
27 Mar
10-14 wk
13 May
5 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
13 – 20 May
15 May
3-4 wk
10 Jun
5 wk after
Cornflower
Centaurea cyanus
7 May
12 Jul
0 wk
8 May
2 Jul
0 wk
Statice
Limonium sinuatum
18 Mar – 1 Apr
23 Apr
8-10 wk
27 May
18 Jun
3 wk after
Sweet William
Dianthus barbatus
12 – 26 Mar
6-8 wk
7 May
0 wk
17 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
1 – 15 Apr
7 May
6-8 wk
27 May
18 Jun
3 wk after
13 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
27 Mar – 10 Apr
13 May
6-8 wk
22 May
24 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
6 Apr – 4 May
27 May
4-8 wk
1 Jun
24 Jun
4 wk after
1 Jun
14 Jun
4 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
20 May
2 wk after
Busy lizzie
Impatiens walleriana
18 Mar – 15 Apr
14 Jun
8-12 wk
10 Jun
9 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
1 – 15 Apr
17 May
6-8 wk
27 May
28 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
15 – 29 Apr
27 Apr
4-6 wk
27 May
3 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Mar
16 Apr
8-10 wk
13 May
11 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
27 Jun
0 wk
8 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
1 – 15 Apr
27 Apr
6-8 wk
27 May
8 Jun
3 wk after
13 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
18 Feb – 18 Mar
16 Apr
8-12 wk
13 May
11 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
23 Feb – 23 Mar
18 Mar
8-12 wk
18 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
4 Mar – 1 Apr
19 Apr
8-12 wk
27 May
14 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
1 – 15 Apr
3 May
6-8 wk
27 May
14 Jun
3 wk after
Corn poppy
Papaver rhoeas
7 May
12 Jul
0 wk
8 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
7 May
8-12 wk
7 May
2 Jul
0 wk
17 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
1 – 15 Apr
3 May
8-10 wk
10 Jun
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
28 May
5-8 wk
7 May
2 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
31 May
6-8 wk
7 May
12 Jul
0 wk
20 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
1 May
6-8 wk
7 May
12 Jun
0 wk
20 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
15 – 29 Apr
12 May
4-6 wk
27 May
9 Jun
3 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
17 May
8-10 wk
7 May
12 Jul
0 wk
17 May
2 Jul
1 wk after
Petunia
Petunia
4 Mar – 1 Apr
23 Apr
8-12 wk
27 May
18 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
18 Mar – 1 Apr
30 Apr
6-8 wk
13 May
11 Jun
1 wk after
19 Jun
6 wk after
Common zinnia
Zinnia elegans
15 – 29 Apr
27 May
4-6 wk
27 May
24 Jun
3 wk after
Common morning glory
Ipomoea purpurea
6 – 20 May
15 May
3-5 wk
10 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
15 – 29 Apr
27 May
4-6 wk
27 May
24 Jun
3 wk after
19 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
30 Mar – 27 Apr
30 Apr
8-12 wk
22 Jun
25 Jun
7 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
17 Apr
8-12 wk
7 May
12 Jun
0 wk
1 Jun
2 Jun
4 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
1 Apr
6-8 wk
7 May
13 May
0 wk
20 May
2 wk after
Safflower
Carthamus tinctorius
7 May
12 Jun
0 wk
8 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
21 May
6-8 wk
7 May
2 Jul
0 wk
21 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
4 Jun
4-6 wk
7 May
2 Jul
0 wk
20 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
4 – 18 Mar
26 Mar
10-12 wk
27 May
4 Jun
3 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
4 Jun
3-4 wk
27 May
25 Jun
3 wk after
1 Jun
15 Jun
4 wk after
China aster
Callistephus chinensis
1 – 15 Apr
24 May
6-8 wk
27 May
5 Jul
3 wk after
19 Jun
25 Jun
6 wk after
Annual phlox
Phlox drummondii
23 Mar – 6 Apr
17 May
6-8 wk
18 May
28 Jun
2 wk after
19 Jun
6 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
20 May
2 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
17 Apr
8-12 wk
7 May
12 Jun
0 wk
1 Jun
2 Jun
4 wk after
African marigold
Tagetes erecta
1 – 15 Apr
17 May
6-8 wk
27 May
28 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
18 Mar – 1 Apr
14 May
6-8 wk
13 May
25 Jun
1 wk after
19 Jun
6 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
7 Apr
8-10 wk
7 May
2 Jun
0 wk
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
1 – 29 Apr
24 Apr
6-10 wk
10 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
7 May
12 Jul
0 wk
8 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
25 Apr
8-10 wk
27 May
20 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
1 May
6-8 wk
7 May
12 Jun
0 wk
20 May
2 Jun
2 wk after