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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 114 days 12 May – 3 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
16 Jun
5-7 wk
12 May
21 Jul
0 wk
5 May
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
28 Jun
4-6 wk
12 May
26 Jul
0 wk
5 May
16 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
11 Jun
5-7 wk
12 May
16 Jul
0 wk
30 Apr
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Florence Fennel
Foeniculum vulgare
13 – 20 May
14 May
4-5 wk
17 Jun
5 wk after
17 Jun
5 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
20 Mar
8-12 wk
12 May
15 May
0 wk
22 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
5 May
4 Jun
1 wk before
5 May
25 May
1 wk before
Maize
Zea mays
Season too short
16 – 23 Apr
3-4 wk
14 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
23 Jun
3-4 wk
17 May
14 Jul
1 wk after
22 May
4 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
30 Jun
0 wk
30 Apr
20 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
11 Jun
5-7 wk
12 May
16 Jul
0 wk
30 Apr
6 Jul
2 wk before
Potato
Solanum tuberosum
5 – 19 Apr
25 May
4-6 wk
17 May
22 Jun
1 wk after
17 May
12 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
15 Jun
5-7 wk
12 May
20 Jul
0 wk
5 May
10 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
27 May
3-4 wk
17 May
17 Jun
1 wk after
22 May
7 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
23 Jun
4-6 wk
12 May
21 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
4 Jul
3-4 wk
12 May
25 Jul
0 wk
5 May
15 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
23 Jun
4-6 wk
12 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
2 – 16 Apr
31 May
2-4 wk
30 Apr
14 Jun
2 wk before
30 Apr
4 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
5 May
4 Jun
1 wk before
5 May
25 May
1 wk before
Spinach
Spinacia oleracea
14 – 21 Apr
25 Jul
3-4 wk
12 May
15 Aug
0 wk
24 Apr
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
16 – 30 Apr
2-4 wk
14 May
0 wk
22 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
23 Jun
4-6 wk
12 May
21 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
19 Jun
3-4 wk
12 May
10 Jul
0 wk
5 May
30 Jun
1 wk before

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