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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
14 Jun
5-7 wk
6 May
19 Jul
0 wk
10 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
26 Jun
4-6 wk
6 May
24 Jul
0 wk
10 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
3 – 31 Mar
27 Mar
8-12 wk
26 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Mar – 1 Apr
9 Jun
5-7 wk
6 May
14 Jul
0 wk
6 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
14 – 21 May
21 May
3-4 wk
11 Jun
11 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
7 – 14 May
24 May
4-5 wk
11 Jun
21 Jun
5 wk after
24 Jun
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
19 – 26 May
3-4 wk
16 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
26 Mar
8-12 wk
6 May
21 May
0 wk
27 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
10 Jun
1 wk after
10 May
31 May
1 wk after
Maize
Zea mays
28 Apr – 5 May
11 May
3-4 wk
26 May
1 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
3 Jul
3-4 wk
11 May
24 Jul
1 wk after
27 May
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
4 Jul
0 wk
6 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
9 Jun
5-7 wk
6 May
14 Jul
0 wk
6 May
4 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
27 May
4-6 wk
22 May
24 Jun
2 wk after
22 May
14 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
19 Jun
5-7 wk
6 May
24 Jul
0 wk
10 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
14 – 21 May
10 Jun
3-4 wk
11 Jun
1 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
31 May
3-4 wk
11 May
21 Jun
1 wk after
27 May
11 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
21 Jun
4-6 wk
6 May
19 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
8 Jul
3-4 wk
6 May
29 Jul
0 wk
10 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
21 Jun
4-6 wk
6 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
31 May
2-4 wk
6 May
14 Jun
0 wk
6 May
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
10 Jun
1 wk after
10 May
31 May
1 wk after
Spinach
Spinacia oleracea
8 – 15 Apr
23 Jul
3-4 wk
6 May
13 Aug
0 wk
2 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
11 wk after
Garden tomato
Solanum lycopersicum
31 Mar – 14 Apr
20 Apr
6-8 wk
26 May
1 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
28 Apr – 12 May
12 Jun
2-4 wk
26 May
26 Jun
3 wk after
24 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
21 Jun
4-6 wk
6 May
19 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
23 Jun
3-4 wk
6 May
14 Jul
0 wk
10 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
30 Apr – 14 May
19 May
4-6 wk
11 Jun
16 Jun
5 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
19 May
8-10 wk
6 May
14 Jul
0 wk
10 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
10 May
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
11 – 25 Mar
2 Jun
6-8 wk
6 May
14 Jul
0 wk
10 May
4 Jul
1 wk after
Spearmint
Mentha spicata
11 Feb – 11 Mar
19 May
8-12 wk
6 May
14 Jul
0 wk
10 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
6 May
13 Aug
0 wk
27 May
3 Aug
3 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
4 May
8-10 wk
11 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
9 May
8-10 wk
6 May
4 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
23 May
6-8 wk
6 May
4 Jul
0 wk
10 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
23 May
6-8 wk
6 May
4 Jul
0 wk
10 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
25 Mar
10-14 wk
11 May
3 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
26 May
3-4 wk
11 Jun
16 Jun
5 wk after
Cornflower
Centaurea cyanus
6 May
14 Jul
0 wk
10 May
4 Jul
1 wk after
Statice
Limonium sinuatum
17 – 31 Mar
26 Apr
8-10 wk
26 May
21 Jun
3 wk after
Sweet William
Dianthus barbatus
11 – 25 Mar
6-8 wk
6 May
0 wk
22 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
31 Mar – 14 Apr
10 May
6-8 wk
26 May
21 Jun
3 wk after
19 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
24 Mar – 7 Apr
11 May
6-8 wk
19 May
22 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Apr – 13 May
25 May
4-8 wk
10 Jun
22 Jun
5 wk after
10 Jun
12 Jun
5 wk after
Foxglove
Digitalis purpurea
25 Feb – 11 Mar
8-10 wk
6 May
0 wk
27 May
3 wk after
Busy lizzie
Impatiens walleriana
19 Mar – 16 Apr
15 Jun
8-12 wk
11 Jun
10 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
14 – 28 Apr
28 Apr
4-6 wk
26 May
26 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
19 Apr
8-10 wk
11 May
14 Jun
1 wk after
Love in a mist
Nigella damascena
6 May
29 Jun
0 wk
10 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
31 Mar – 14 Apr
30 Apr
6-8 wk
26 May
11 Jun
3 wk after
19 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
19 Apr
8-12 wk
11 May
14 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
21 Feb – 21 Mar
20 Mar
8-12 wk
16 May
1 wk after
Regal-foxtail
Ptilotus nobilis
19 Mar – 16 Apr
11 Apr
8-12 wk
11 Jun
5 wk after
Globe amaranth
Gomphrena globosa
16 – 30 Apr
25 Apr
6-8 wk
11 Jun
5 wk after
Corn poppy
Papaver rhoeas
6 May
14 Jul
0 wk
10 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
9 May
8-12 wk
6 May
4 Jul
0 wk
22 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
2 – 16 Apr
6 May
8-10 wk
11 Jun
1 Jul
5 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
30 May
5-8 wk
6 May
4 Jul
0 wk
Stock
Matthiola incana
11 – 25 Mar
2 Jun
6-8 wk
6 May
14 Jul
0 wk
27 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
3 May
6-8 wk
6 May
14 Jun
0 wk
27 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
14 – 28 Apr
13 May
4-6 wk
26 May
10 Jun
3 wk after
Garden pansy
Viola × wittrockiana
25 Feb – 11 Mar
19 May
8-10 wk
6 May
14 Jul
0 wk
22 May
4 Jul
2 wk after
Petunia
Petunia
3 – 31 Mar
26 Apr
8-12 wk
26 May
21 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
3 May
6-8 wk
11 May
14 Jun
1 wk after
24 Jun
7 wk after
Common zinnia
Zinnia elegans
14 – 28 Apr
28 May
4-6 wk
26 May
25 Jun
3 wk after
Common morning glory
Ipomoea purpurea
7 – 21 May
26 May
3-5 wk
11 Jun
16 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
14 – 28 Apr
25 May
4-6 wk
26 May
22 Jun
3 wk after
24 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
26 Mar – 23 Apr
11 May
8-12 wk
18 Jun
6 Jul
6 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
19 Apr
8-12 wk
6 May
14 Jun
0 wk
10 Jun
5 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
3 Apr
6-8 wk
6 May
15 May
0 wk
27 May
3 wk after
Safflower
Carthamus tinctorius
6 May
14 Jun
0 wk
10 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
23 May
6-8 wk
6 May
4 Jul
0 wk
18 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
6 Jun
4-6 wk
6 May
4 Jul
0 wk
27 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
3 – 17 Mar
24 Mar
10-12 wk
26 May
2 Jun
3 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
2 Jun
3-4 wk
26 May
23 Jun
3 wk after
10 Jun
13 Jun
5 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
22 May
6-8 wk
26 May
3 Jul
3 wk after
24 Jun
7 wk after
Annual phlox
Phlox drummondii
21 Mar – 4 Apr
20 May
6-8 wk
16 May
1 Jul
1 wk after
24 Jun
7 wk after
Hollyhock
Alcea rosea
11 – 25 Mar
6-8 wk
6 May
0 wk
27 May
3 wk after
Alpine delphinium
Delphinium elatum
11 Feb – 11 Mar
19 Apr
8-12 wk
6 May
14 Jun
0 wk
10 Jun
5 wk after
African marigold
Tagetes erecta
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
12 May
6-8 wk
11 May
23 Jun
1 wk after
24 Jun
7 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
9 Apr
8-10 wk
6 May
4 Jun
0 wk
10 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
2 – 30 Apr
5 May
6-10 wk
11 Jun
16 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
6 May
14 Jul
0 wk
10 May
4 Jul
1 wk after
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
3 May
6-8 wk
6 May
14 Jun
0 wk
27 May
4 Jun
3 wk after