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Method
Rel. frost
Last spring frost (0°C) 6 May Frost 3 of 4 years · 20 years of data
Frost-free season 138 days 6 May – 21 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)
18 Mar – 1 Apr
13 Jun
5-7 wk
6 May
18 Jul
0 wk
7 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
25 Jun
4-6 wk
6 May
23 Jul
0 wk
7 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
21 Feb – 21 Mar
1 Apr
8-12 wk
16 May
27 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Mar – 1 Apr
8 Jun
5-7 wk
6 May
13 Jul
0 wk
6 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
14 – 21 May
15 May
3-4 wk
11 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
7 – 14 May
24 May
4-5 wk
11 Jun
21 Jun
5 wk after
18 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
19 – 26 May
3-4 wk
16 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
24 Mar
8-12 wk
6 May
19 May
0 wk
19 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
7 May
8 Jun
0 wk
7 May
29 May
0 wk
Maize
Zea mays
28 Apr – 5 May
5 May
3-4 wk
26 May
26 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
2 Jul
3-4 wk
11 May
23 Jul
1 wk after
19 May
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
3 Jul
0 wk
6 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
8 Jun
5-7 wk
6 May
13 Jul
0 wk
6 May
3 Jul
0 wk
Potato
Solanum tuberosum
4 – 18 Apr
23 May
4-6 wk
16 May
20 Jun
1 wk after
16 May
10 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
18 Jun
5-7 wk
6 May
23 Jul
0 wk
7 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
14 – 21 May
31 May
3-4 wk
11 Jun
21 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
27 May
3-4 wk
11 May
17 Jun
1 wk after
19 May
7 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
20 Jun
4-6 wk
6 May
18 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
7 Jul
3-4 wk
6 May
28 Jul
0 wk
7 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
20 Jun
4-6 wk
6 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
29 May
2-4 wk
6 May
12 Jun
0 wk
6 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
7 May
8 Jun
0 wk
7 May
29 May
0 wk
Spinach
Spinacia oleracea
8 – 15 Apr
22 Jul
3-4 wk
6 May
12 Aug
0 wk
3 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
31 May – 14 Jun
4-6 wk
12 Jul
10 wk after
Garden tomato
Solanum lycopersicum
31 Mar – 14 Apr
14 Apr
6-8 wk
26 May
26 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
28 Apr – 12 May
2 Jun
2-4 wk
26 May
16 Jun
3 wk after
18 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
20 Jun
4-6 wk
6 May
18 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
22 Jun
3-4 wk
6 May
13 Jul
0 wk
7 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
30 Apr – 14 May
9 May
4-6 wk
11 Jun
5 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
18 May
8-10 wk
6 May
13 Jul
0 wk
31 May
3 Jul
4 wk after
Dill
Anethum graveolens
7 May
23 Jul
0 wk
Wild chives
Allium schoenoprasum
11 – 25 Mar
1 Jun
6-8 wk
6 May
13 Jul
0 wk
7 May
3 Jul
0 wk
Spearmint
Mentha spicata
11 Feb – 11 Mar
18 May
8-12 wk
6 May
13 Jul
0 wk
31 May
3 Jul
4 wk after
Coriander
Coriandrum sativum
6 May
12 Aug
0 wk
19 May
2 Aug
2 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
3 May
8-10 wk
11 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
8 May
8-10 wk
6 May
3 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
22 May
6-8 wk
6 May
3 Jul
0 wk
31 May
23 Jun
4 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
22 May
6-8 wk
6 May
3 Jul
0 wk
7 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
30 Mar
10-14 wk
11 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
14 – 21 May
16 May
3-4 wk
11 Jun
5 wk after
Cornflower
Centaurea cyanus
6 May
13 Jul
0 wk
7 May
3 Jul
0 wk
Statice
Limonium sinuatum
17 – 31 Mar
25 Apr
8-10 wk
26 May
20 Jun
3 wk after
Sweet William
Dianthus barbatus
11 – 25 Mar
6-8 wk
6 May
0 wk
16 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
31 Mar – 14 Apr
9 May
6-8 wk
26 May
20 Jun
3 wk after
12 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
24 Mar – 7 Apr
10 May
6-8 wk
19 May
21 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
5 Apr – 3 May
24 May
4-8 wk
31 May
21 Jun
4 wk after
31 May
11 Jun
4 wk after
Foxglove
Digitalis purpurea
25 Feb – 11 Mar
8-10 wk
6 May
0 wk
19 May
2 wk after
Busy lizzie
Impatiens walleriana
19 Mar – 16 Apr
13 Jun
8-12 wk
11 Jun
8 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
14 – 28 Apr
26 Apr
4-6 wk
26 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
18 Apr
8-10 wk
11 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
6 May
28 Jun
0 wk
7 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
31 Mar – 14 Apr
29 Apr
6-8 wk
26 May
10 Jun
3 wk after
12 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
18 Apr
8-12 wk
11 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
21 Feb – 21 Mar
19 Mar
8-12 wk
16 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
3 – 31 Mar
18 Apr
8-12 wk
26 May
13 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
31 Mar – 14 Apr
2 May
6-8 wk
26 May
13 Jun
3 wk after
Corn poppy
Papaver rhoeas
6 May
13 Jul
0 wk
7 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
8 May
8-12 wk
6 May
3 Jul
0 wk
16 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
2 – 16 Apr
5 May
8-10 wk
11 Jun
30 Jun
5 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
29 May
5-8 wk
6 May
3 Jul
0 wk
Stock
Matthiola incana
11 – 25 Mar
1 Jun
6-8 wk
6 May
13 Jul
0 wk
19 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
2 May
6-8 wk
6 May
13 Jun
0 wk
19 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
14 – 28 Apr
11 May
4-6 wk
26 May
8 Jun
3 wk after
Garden pansy
Viola × wittrockiana
25 Feb – 11 Mar
18 May
8-10 wk
6 May
13 Jul
0 wk
16 May
3 Jul
1 wk after
Petunia
Petunia
3 – 31 Mar
25 Apr
8-12 wk
26 May
20 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
2 May
6-8 wk
11 May
13 Jun
1 wk after
18 Jun
6 wk after
Common zinnia
Zinnia elegans
14 – 28 Apr
26 May
4-6 wk
26 May
23 Jun
3 wk after
Common morning glory
Ipomoea purpurea
7 – 21 May
16 May
3-5 wk
11 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
14 – 28 Apr
24 May
4-6 wk
26 May
21 Jun
3 wk after
18 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
26 Mar – 23 Apr
1 May
8-12 wk
18 Jun
26 Jun
6 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
18 Apr
8-12 wk
6 May
13 Jun
0 wk
31 May
3 Jun
4 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
2 Apr
6-8 wk
6 May
14 May
0 wk
19 May
2 wk after
Safflower
Carthamus tinctorius
6 May
13 Jun
0 wk
7 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
22 May
6-8 wk
6 May
3 Jul
0 wk
20 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
5 Jun
4-6 wk
6 May
3 Jul
0 wk
19 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
3 – 17 Mar
23 Mar
10-12 wk
26 May
1 Jun
3 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
7 Jun
3-4 wk
26 May
28 Jun
3 wk after
31 May
18 Jun
4 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
27 May
6-8 wk
26 May
8 Jul
3 wk after
18 Jun
28 Jun
6 wk after
Annual phlox
Phlox drummondii
21 Mar – 4 Apr
19 May
6-8 wk
16 May
30 Jun
1 wk after
18 Jun
20 Jun
6 wk after
Hollyhock
Alcea rosea
11 – 25 Mar
6-8 wk
6 May
0 wk
19 May
2 wk after
Alpine delphinium
Delphinium elatum
11 Feb – 11 Mar
18 Apr
8-12 wk
6 May
13 Jun
0 wk
31 May
3 Jun
4 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
17 May
6-8 wk
11 May
28 Jun
1 wk after
18 Jun
18 Jun
6 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
8 Apr
8-10 wk
6 May
3 Jun
0 wk
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
2 – 30 Apr
25 Apr
6-10 wk
11 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
6 May
13 Jul
0 wk
7 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
26 Apr
8-10 wk
26 May
21 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Mar
2 May
6-8 wk
6 May
13 Jun
0 wk
19 May
3 Jun
2 wk after