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Method
Rel. frost
Last spring frost (0°C) 10 May Frost 3 of 4 years · 20 years of data
Frost-free season 135 days 10 May – 22 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)
22 Mar – 5 Apr
15 Jun
5-7 wk
10 May
20 Jul
0 wk
14 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
27 Jun
4-6 wk
10 May
25 Jul
0 wk
14 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
7 Mar – 4 Apr
25 Mar
8-12 wk
30 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
22 Mar – 5 Apr
10 Jun
5-7 wk
10 May
15 Jul
0 wk
10 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
18 – 25 May
19 May
3-4 wk
15 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 May
23 May
4-5 wk
15 Jun
20 Jun
5 wk after
28 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
23 – 30 May
3-4 wk
20 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Feb – 15 Mar
30 Mar
8-12 wk
10 May
25 May
0 wk
31 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 May
14 Jun
1 wk after
14 May
4 Jun
1 wk after
Maize
Zea mays
2 – 9 May
9 May
3-4 wk
30 May
30 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
29 Jun
3-4 wk
15 May
20 Jul
1 wk after
31 May
10 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 May
5 Jul
0 wk
10 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Mar – 5 Apr
10 Jun
5-7 wk
10 May
15 Jul
0 wk
10 May
5 Jul
0 wk
Potato
Solanum tuberosum
14 – 28 Apr
27 May
4-6 wk
26 May
24 Jun
2 wk after
26 May
14 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Mar – 5 Apr
20 Jun
5-7 wk
10 May
25 Jul
0 wk
14 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
18 – 25 May
12 Jun
3-4 wk
15 Jun
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
10 Jun
3-4 wk
15 May
1 Jul
1 wk after
31 May
21 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
22 Jun
4-6 wk
10 May
20 Jul
0 wk
Lettuce
Lactuca sativa
12 – 19 Apr
9 Jul
3-4 wk
10 May
30 Jul
0 wk
14 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
22 Jun
4-6 wk
10 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
12 – 26 Apr
1 Jun
2-4 wk
10 May
15 Jun
0 wk
10 May
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 May
14 Jun
1 wk after
14 May
4 Jun
1 wk after
Spinach
Spinacia oleracea
12 – 19 Apr
24 Jul
3-4 wk
10 May
14 Aug
0 wk
6 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
11 wk after
Garden tomato
Solanum lycopersicum
4 – 18 Apr
18 Apr
6-8 wk
30 May
30 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
14 Jun
2-4 wk
30 May
28 Jun
3 wk after
28 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
22 Jun
4-6 wk
10 May
20 Jul
0 wk
Garden pea
Pisum sativum
12 – 19 Apr
24 Jun
3-4 wk
10 May
15 Jul
0 wk
14 May
5 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
4 – 18 May
21 May
4-6 wk
15 Jun
18 Jun
5 wk after
Lemon balm
Melissa officinalis
1 – 15 Mar
20 May
8-10 wk
10 May
15 Jul
0 wk
14 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
14 May
20 Jul
1 wk after
Wild chives
Allium schoenoprasum
15 – 29 Mar
3 Jun
6-8 wk
10 May
15 Jul
0 wk
14 May
5 Jul
1 wk after
Spearmint
Mentha spicata
15 Feb – 15 Mar
20 May
8-12 wk
10 May
15 Jul
0 wk
14 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
10 May
9 Aug
0 wk
31 May
30 Jul
3 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
5 May
8-10 wk
15 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
10 May
8-10 wk
10 May
5 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Mar
24 May
6-8 wk
10 May
5 Jul
0 wk
14 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
24 May
6-8 wk
10 May
5 Jul
0 wk
14 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
26 Mar
10-14 wk
15 May
4 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
18 – 25 May
28 May
3-4 wk
15 Jun
18 Jun
5 wk after
Cornflower
Centaurea cyanus
10 May
15 Jul
0 wk
14 May
5 Jul
1 wk after
Statice
Limonium sinuatum
21 Mar – 4 Apr
26 Apr
8-10 wk
30 May
21 Jun
3 wk after
Sweet William
Dianthus barbatus
15 – 29 Mar
6-8 wk
10 May
0 wk
26 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
10 May
6-8 wk
30 May
21 Jun
3 wk after
23 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
28 Mar – 11 Apr
13 May
6-8 wk
23 May
24 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
19 Apr – 17 May
27 May
4-8 wk
14 Jun
24 Jun
5 wk after
14 Jun
14 Jun
5 wk after
Foxglove
Digitalis purpurea
1 – 15 Mar
8-10 wk
10 May
0 wk
31 May
3 wk after
Busy lizzie
Impatiens walleriana
23 Mar – 20 Apr
18 Jun
8-12 wk
15 Jun
13 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
20 May
6-8 wk
30 May
1 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
18 Apr – 2 May
1 May
4-6 wk
30 May
3 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
15 Apr
8-10 wk
15 May
10 Jun
1 wk after
Love in a mist
Nigella damascena
10 May
30 Jun
0 wk
14 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
4 – 18 Apr
30 Apr
6-8 wk
30 May
11 Jun
3 wk after
23 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
15 Apr
8-12 wk
15 May
10 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
25 Feb – 25 Mar
21 Mar
8-12 wk
20 May
1 wk after
Regal-foxtail
Ptilotus nobilis
23 Mar – 20 Apr
13 Apr
8-12 wk
15 Jun
5 wk after
Globe amaranth
Gomphrena globosa
20 Apr – 4 May
27 Apr
6-8 wk
15 Jun
5 wk after
Corn poppy
Papaver rhoeas
10 May
15 Jul
0 wk
14 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
15 Feb – 15 Mar
10 May
8-12 wk
10 May
5 Jul
0 wk
26 May
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
6 – 20 Apr
6 May
8-10 wk
15 Jun
1 Jul
5 wk after
Sweet pea
Lathyrus odoratus
15 Mar – 5 Apr
31 May
5-8 wk
10 May
5 Jul
0 wk
Stock
Matthiola incana
15 – 29 Mar
3 Jun
6-8 wk
10 May
15 Jul
0 wk
31 May
5 Jul
3 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
4 May
6-8 wk
10 May
15 Jun
0 wk
31 May
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
18 Apr – 2 May
16 May
4-6 wk
30 May
13 Jun
3 wk after
Garden pansy
Viola × wittrockiana
1 – 15 Mar
20 May
8-10 wk
10 May
15 Jul
0 wk
26 May
5 Jul
2 wk after
Petunia
Petunia
7 Mar – 4 Apr
26 Apr
8-12 wk
30 May
21 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
29 Apr
6-8 wk
15 May
10 Jun
1 wk after
28 Jun
7 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
31 May
4-6 wk
30 May
28 Jun
3 wk after
Common morning glory
Ipomoea purpurea
11 – 25 May
28 May
3-5 wk
15 Jun
18 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
27 May
4-6 wk
30 May
24 Jun
3 wk after
28 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
30 Mar – 27 Apr
13 May
8-12 wk
22 Jun
8 Jul
6 wk after
Bee balm
Monarda didyma
15 Feb – 15 Mar
20 Apr
8-12 wk
10 May
15 Jun
0 wk
14 Jun
5 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
4 Apr
6-8 wk
10 May
16 May
0 wk
31 May
3 wk after
Safflower
Carthamus tinctorius
10 May
15 Jun
0 wk
14 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Mar
24 May
6-8 wk
10 May
5 Jul
0 wk
22 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
7 Jun
4-6 wk
10 May
5 Jul
0 wk
31 May
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
7 – 21 Mar
26 Mar
10-12 wk
30 May
4 Jun
3 wk after
Sunflower
Helianthus annuus
2 – 9 May
3 Jun
3-4 wk
30 May
24 Jun
3 wk after
14 Jun
14 Jun
5 wk after
China aster
Callistephus chinensis
4 – 18 Apr
23 May
6-8 wk
30 May
4 Jul
3 wk after
28 Jun
7 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
20 May
6-8 wk
20 May
1 Jul
1 wk after
28 Jun
7 wk after
Hollyhock
Alcea rosea
15 – 29 Mar
6-8 wk
10 May
0 wk
31 May
3 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
20 Apr
8-12 wk
10 May
15 Jun
0 wk
14 Jun
5 wk after
African marigold
Tagetes erecta
4 – 18 Apr
20 May
6-8 wk
30 May
1 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
13 May
6-8 wk
15 May
24 Jun
1 wk after
28 Jun
7 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
10 Apr
8-10 wk
10 May
5 Jun
0 wk
14 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
6 Apr – 4 May
7 May
6-10 wk
15 Jun
18 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
10 May
14 Jul
0 wk
14 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
25 Apr
8-10 wk
30 May
20 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
4 May
6-8 wk
10 May
15 Jun
0 wk
31 May
5 Jun
3 wk after