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Method
Rel. frost
Last spring frost (0°C) 12 May Frost 9 of 10 years · 20 years of data
Frost-free season 112 days 12 May – 1 Sep
Probability that frost is over

10% = 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)
24 Mar – 7 Apr
13 Jun
5-7 wk
12 May
18 Jul
0 wk
13 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
25 Jun
4-6 wk
12 May
23 Jul
0 wk
13 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
8 Jun
5-7 wk
12 May
13 Jul
0 wk
12 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
25 Apr – 2 May
3-4 wk
23 May
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
23 May
4-5 wk
1 Jun
20 Jun
3 wk after
6 Jun
10 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
9 Mar
8-12 wk
12 May
0 wk
25 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
24 May
0 wk
13 May
14 May
0 wk
Maize
Zea mays
Season too short
18 – 25 Apr
3-4 wk
16 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
19 Jun
3-4 wk
18 May
10 Jul
1 wk after
25 May
30 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
29 Jun
0 wk
12 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
8 Jun
5-7 wk
12 May
13 Jul
0 wk
12 May
3 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
7 May
4-6 wk
22 May
4 Jun
1 wk after
22 May
25 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
14 Jun
5-7 wk
12 May
19 Jul
0 wk
13 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
25 Apr – 2 May
3-4 wk
23 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
8 May
3-4 wk
18 May
29 May
1 wk after
25 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
20 Jun
4-6 wk
12 May
18 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
3 Jul
3-4 wk
12 May
24 Jul
0 wk
13 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
20 Jun
4-6 wk
12 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
15 May
2-4 wk
12 May
29 May
0 wk
12 May
19 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
24 May
0 wk
13 May
14 May
0 wk
Spinach
Spinacia oleracea
14 – 21 Apr
22 Jul
3-4 wk
12 May
12 Aug
0 wk
9 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
18 Apr – 2 May
2-4 wk
16 May
1 wk after
25 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
20 Jun
4-6 wk
12 May
18 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
18 Jun
3-4 wk
12 May
9 Jul
0 wk
13 May
29 Jun
0 wk

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Season too short
11 – 25 Apr
4-6 wk
23 May
2 wk after
Lemon balm
Melissa officinalis
3 – 17 Mar
14 May
8-10 wk
12 May
9 Jul
0 wk
6 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
13 May
10 Jul
0 wk
Wild chives
Allium schoenoprasum
17 – 31 Mar
1 Jun
6-8 wk
12 May
13 Jul
0 wk
13 May
3 Jul
0 wk
Spearmint
Mentha spicata
17 Feb – 17 Mar
18 May
8-12 wk
12 May
13 Jul
0 wk
6 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
12 May
30 Jul
0 wk
25 May
20 Jul
2 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
3 May
8-10 wk
18 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
3 – 17 Mar
8 May
8-10 wk
12 May
3 Jul
0 wk
Oregano
Origanum vulgare
17 – 31 Mar
22 May
6-8 wk
12 May
3 Jul
0 wk
6 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
17 – 31 Mar
22 May
6-8 wk
12 May
3 Jul
0 wk
13 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
18 Mar
10-14 wk
18 May
27 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
Season too short
25 Apr – 2 May
3-4 wk
23 May
2 wk after
Cornflower
Centaurea cyanus
12 May
13 Jul
0 wk
13 May
3 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
7 – 21 Mar
26 Mar
8-10 wk
16 May
21 May
1 wk after
Sweet William
Dianthus barbatus
17 – 31 Mar
6-8 wk
12 May
0 wk
22 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
21 Mar – 4 Apr
9 Apr
6-8 wk
16 May
21 May
1 wk after
13 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
17 – 31 Mar
14 Apr
6-8 wk
12 May
26 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
30 Mar – 27 Apr
10 Apr
4-8 wk
25 May
2 wk after
25 May
2 wk after
Foxglove
Digitalis purpurea
3 – 17 Mar
8-10 wk
12 May
0 wk
25 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
28 Feb – 28 Mar
8 May
8-12 wk
23 May
3 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
21 Mar – 4 Apr
19 Apr
6-8 wk
16 May
31 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
5 Apr
8-10 wk
18 May
31 May
1 wk after
Love in a mist
Nigella damascena
12 May
24 Jun
0 wk
13 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
21 Mar – 4 Apr
30 Mar
6-8 wk
16 May
1 wk after
13 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
5 Apr
8-12 wk
18 May
31 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
21 Feb – 21 Mar
19 Mar
8-12 wk
16 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
2 wk after
Corn poppy
Papaver rhoeas
12 May
9 Jul
0 wk
13 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
17 Feb – 17 Mar
4 May
8-12 wk
12 May
29 Jun
0 wk
22 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
14 – 28 Mar
5 Apr
8-10 wk
23 May
31 May
2 wk after
Sweet pea
Lathyrus odoratus
17 Mar – 7 Apr
29 May
5-8 wk
12 May
3 Jul
0 wk
Stock
Matthiola incana
17 – 31 Mar
28 May
6-8 wk
12 May
9 Jul
0 wk
25 May
29 Jun
2 wk after
Wormwood
Artemisia absinthium
17 – 31 Mar
2 May
6-8 wk
12 May
13 Jun
0 wk
25 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
11 – 25 Apr
4-6 wk
23 May
2 wk after
Garden pansy
Viola × wittrockiana
3 – 17 Mar
18 May
8-10 wk
12 May
13 Jul
0 wk
22 May
3 Jul
1 wk after
Petunia
Petunia
Greenhouse
21 Feb – 21 Mar
26 Mar
8-12 wk
16 May
21 May
1 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
19 Apr
6-8 wk
18 May
31 May
1 wk after
24 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
4 – 18 Apr
20 Apr
4-6 wk
16 May
18 May
1 wk after
Common morning glory
Ipomoea purpurea
Season too short
18 Apr – 2 May
3-5 wk
23 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
4 – 18 Apr
28 Apr
4-6 wk
16 May
26 May
1 wk after
25 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
3 wk after
Bee balm
Monarda didyma
17 Feb – 17 Mar
14 Apr
8-12 wk
12 May
9 Jun
0 wk
6 Jun
4 wk after
Yarrow
Achillea millefolium
17 – 31 Mar
2 Apr
6-8 wk
12 May
14 May
0 wk
25 May
2 wk after
Safflower
Carthamus tinctorius
12 May
13 Jun
0 wk
13 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
17 – 31 Mar
22 May
6-8 wk
12 May
3 Jul
0 wk
26 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
31 Mar – 14 Apr
1 Jun
4-6 wk
12 May
29 Jun
0 wk
25 May
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
28 Feb – 14 Mar
10-12 wk
23 May
2 wk after
Sunflower
Helianthus annuus
4 – 11 May
26 May
3-4 wk
1 Jun
16 Jun
3 wk after
6 Jun
6 Jun
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
15 May
6-8 wk
1 Jun
26 Jun
3 wk after
24 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
17 – 31 Mar
19 Apr
6-8 wk
12 May
31 May
0 wk
25 May
2 wk after
Hollyhock
Alcea rosea
17 – 31 Mar
6-8 wk
12 May
0 wk
25 May
2 wk after
Alpine delphinium
Delphinium elatum
17 Feb – 17 Mar
14 Apr
8-12 wk
12 May
9 Jun
0 wk
6 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
21 Mar – 4 Apr
19 Apr
6-8 wk
16 May
31 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
5 May
6-8 wk
18 May
16 Jun
1 wk after
24 Jun
6 wk after
Wood sage
Salvia nemorosa
3 – 17 Mar
4 Apr
8-10 wk
12 May
30 May
0 wk
6 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
14 Mar – 11 Apr
6-10 wk
23 May
2 wk after
California goldenpoppy
Eschscholzia californica
12 May
4 Jul
0 wk
13 May
24 Jun
0 wk
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
17 Apr
8-10 wk
1 Jun
12 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
17 – 31 Mar
2 May
6-8 wk
12 May
13 Jun
0 wk
25 May
3 Jun
2 wk after