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Method
Rel. frost
Last spring frost (0°C) 11 May Frost 3 of 4 years · 20 years of data
Frost-free season 108 days 11 May – 27 Aug
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)
23 Mar – 6 Apr
12 Jun
5-7 wk
11 May
17 Jul
0 wk
12 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
12 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
26 Feb – 26 Mar
26 Mar
8-12 wk
21 May
21 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Mar – 6 Apr
7 Jun
5-7 wk
11 May
12 Jul
0 wk
11 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
3 – 10 May
20 May
3-4 wk
31 May
10 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
26 Apr – 3 May
24 May
4-5 wk
31 May
21 Jun
3 wk after
5 Jun
11 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
24 – 31 May
3-4 wk
21 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Feb – 16 Mar
16 Mar
8-12 wk
11 May
11 May
0 wk
24 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 May
31 May
0 wk
12 May
21 May
0 wk
Maize
Zea mays
Fleece
23 – 30 Apr
10 May
3-4 wk
21 May
31 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Apr
20 Jun
3-4 wk
16 May
11 Jul
1 wk after
24 May
1 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 May
1 Jul
0 wk
11 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Mar – 6 Apr
7 Jun
5-7 wk
11 May
12 Jul
0 wk
11 May
2 Jul
0 wk
Potato
Solanum tuberosum
9 – 23 Apr
14 May
4-6 wk
21 May
11 Jun
1 wk after
21 May
1 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Mar – 6 Apr
16 Jun
5-7 wk
11 May
21 Jul
0 wk
12 May
11 Jul
0 wk
Pumpkin
Cucurbita pepo
19 – 26 May
25 May
3-4 wk
16 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Apr
23 May
3-4 wk
16 May
13 Jun
1 wk after
24 May
3 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
30 Mar – 13 Apr
19 Jun
4-6 wk
11 May
17 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Apr
5 Jul
3-4 wk
11 May
26 Jul
0 wk
12 May
16 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
30 Mar – 13 Apr
19 Jun
4-6 wk
11 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Apr
21 May
2-4 wk
11 May
4 Jun
0 wk
11 May
25 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 May
31 May
0 wk
12 May
21 May
0 wk
Spinach
Spinacia oleracea
13 – 20 Apr
21 Jul
3-4 wk
11 May
11 Aug
0 wk
8 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
5 – 19 Jun
4-6 wk
17 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
26 Mar – 9 Apr
19 Apr
6-8 wk
21 May
31 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 May
27 May
2-4 wk
31 May
10 Jun
3 wk after
23 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
30 Mar – 13 Apr
19 Jun
4-6 wk
11 May
17 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Apr
20 Jun
3-4 wk
11 May
11 Jul
0 wk
12 May
1 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
Fleece
19 Apr – 3 May
19 May
4-6 wk
31 May
16 Jun
3 wk after
Lemon balm
Melissa officinalis
2 – 16 Mar
16 May
8-10 wk
11 May
11 Jul
0 wk
5 Jun
1 Jul
4 wk after
Dill
Anethum graveolens
12 May
11 Jul
0 wk
Wild chives
Allium schoenoprasum
16 – 30 Mar
31 May
6-8 wk
11 May
12 Jul
0 wk
12 May
2 Jul
0 wk
Spearmint
Mentha spicata
16 Feb – 16 Mar
17 May
8-12 wk
11 May
12 Jul
0 wk
5 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
11 May
31 Jul
0 wk
24 May
21 Jul
2 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
2 May
8-10 wk
16 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Mar
7 May
8-10 wk
11 May
2 Jul
0 wk
Oregano
Origanum vulgare
16 – 30 Mar
21 May
6-8 wk
11 May
2 Jul
0 wk
5 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
16 – 30 Mar
21 May
6-8 wk
11 May
2 Jul
0 wk
12 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
17 Mar
10-14 wk
16 May
26 May
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
Fleece
3 – 10 May
26 May
3-4 wk
31 May
16 Jun
3 wk after
Cornflower
Centaurea cyanus
11 May
12 Jul
0 wk
12 May
2 Jul
0 wk
Statice
Limonium sinuatum
22 Mar – 5 Apr
16 Apr
8-10 wk
31 May
11 Jun
3 wk after
Sweet William
Dianthus barbatus
16 – 30 Mar
6-8 wk
11 May
0 wk
21 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
30 Apr
6-8 wk
31 May
11 Jun
3 wk after
17 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
29 Mar – 12 Apr
7 May
6-8 wk
24 May
18 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
10 Apr – 8 May
21 May
4-8 wk
5 Jun
18 Jun
4 wk after
5 Jun
8 Jun
4 wk after
Foxglove
Digitalis purpurea
2 – 16 Mar
8-10 wk
11 May
0 wk
24 May
2 wk after
Busy lizzie
Impatiens walleriana
24 Mar – 21 Apr
6 Jun
8-12 wk
16 Jun
1 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
10 May
6-8 wk
31 May
21 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
19 Apr
4-6 wk
31 May
3 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Mar
6 Apr
8-10 wk
16 May
1 Jun
1 wk after
Love in a mist
Nigella damascena
11 May
26 Jun
0 wk
12 May
16 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
26 Mar – 9 Apr
29 Apr
6-8 wk
21 May
10 Jun
1 wk after
30 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
6 Apr
8-12 wk
16 May
1 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
18 Feb – 18 Mar
18 Mar
8-12 wk
13 May
13 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
8 Mar – 5 Apr
11 Apr
8-12 wk
31 May
6 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
5 – 19 Apr
25 Apr
6-8 wk
31 May
6 Jun
3 wk after
Corn poppy
Papaver rhoeas
11 May
11 Jul
0 wk
12 May
1 Jul
0 wk
Snapdragon
Antirrhinum majus
16 Feb – 16 Mar
6 May
8-12 wk
11 May
1 Jul
0 wk
21 May
21 Jun
1 wk after
Flossflower
Ageratum houstonianum
7 – 21 Apr
26 Apr
8-10 wk
16 Jun
21 Jun
5 wk after
Sweet pea
Lathyrus odoratus
16 Mar – 6 Apr
28 May
5-8 wk
11 May
2 Jul
0 wk
Stock
Matthiola incana
16 – 30 Mar
30 May
6-8 wk
11 May
11 Jul
0 wk
24 May
1 Jul
2 wk after
Wormwood
Artemisia absinthium
16 – 30 Mar
1 May
6-8 wk
11 May
12 Jun
0 wk
24 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
9 – 23 Apr
16 May
4-6 wk
21 May
13 Jun
1 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Mar
17 May
8-10 wk
11 May
12 Jul
0 wk
21 May
2 Jul
1 wk after
Petunia
Petunia
8 Mar – 5 Apr
16 Apr
8-12 wk
31 May
11 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
20 Apr
6-8 wk
16 May
1 Jun
1 wk after
23 Jun
6 wk after
Common zinnia
Zinnia elegans
19 Apr – 3 May
19 May
4-6 wk
31 May
16 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
26 Apr – 10 May
26 May
3-5 wk
31 May
16 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
19 Apr – 3 May
21 May
4-6 wk
31 May
18 Jun
3 wk after
23 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
24 Mar – 21 Apr
11 May
8-12 wk
16 Jun
6 Jul
5 wk after
Bee balm
Monarda didyma
16 Feb – 16 Mar
16 Apr
8-12 wk
11 May
11 Jun
0 wk
5 Jun
4 wk after
Yarrow
Achillea millefolium
16 – 30 Mar
1 Apr
6-8 wk
11 May
13 May
0 wk
24 May
2 wk after
Safflower
Carthamus tinctorius
11 May
12 Jun
0 wk
12 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
16 – 30 Mar
21 May
6-8 wk
11 May
2 Jul
0 wk
25 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
30 Mar – 13 Apr
3 Jun
4-6 wk
11 May
1 Jul
0 wk
24 May
21 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
26 Feb – 12 Mar
27 Mar
10-12 wk
21 May
5 Jun
1 wk after
Sunflower
Helianthus annuus
3 – 10 May
25 May
3-4 wk
31 May
15 Jun
3 wk after
5 Jun
5 Jun
4 wk after
China aster
Callistephus chinensis
5 – 19 Apr
14 May
6-8 wk
31 May
25 Jun
3 wk after
23 Jun
6 wk after
Annual phlox
Phlox drummondii
26 Mar – 9 Apr
10 May
6-8 wk
21 May
21 Jun
1 wk after
23 Jun
6 wk after
Hollyhock
Alcea rosea
16 – 30 Mar
6-8 wk
11 May
0 wk
24 May
2 wk after
Alpine delphinium
Delphinium elatum
16 Feb – 16 Mar
16 Apr
8-12 wk
11 May
11 Jun
0 wk
5 Jun
4 wk after
African marigold
Tagetes erecta
5 – 19 Apr
10 May
6-8 wk
31 May
21 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
4 May
6-8 wk
16 May
15 Jun
1 wk after
23 Jun
6 wk after
Wood sage
Salvia nemorosa
2 – 16 Mar
6 Apr
8-10 wk
11 May
1 Jun
0 wk
5 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
22 Mar – 19 Apr
5 May
6-10 wk
31 May
16 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
11 May
5 Jul
0 wk
12 May
25 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
12 – 26 Mar
26 Apr
8-10 wk
21 May
21 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
16 – 30 Mar
1 May
6-8 wk
11 May
12 Jun
0 wk
24 May
2 Jun
2 wk after