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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 9 of 10 years · 20 years of data
Frost-free season 114 days 7 May – 29 Aug
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)
19 Mar – 2 Apr
16 Jun
5-7 wk
7 May
21 Jul
0 wk
11 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
28 Jun
4-6 wk
7 May
26 Jul
0 wk
11 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
11 Jun
5-7 wk
7 May
16 Jul
0 wk
7 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 Apr – 6 May
26 May
4-5 wk
3 Jun
23 Jun
4 wk after
11 Jun
13 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
20 Mar
8-12 wk
7 May
15 May
0 wk
28 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
4 Jun
1 wk after
11 May
25 May
1 wk after
Maize
Zea mays
Season too short
10 – 17 Apr
3-4 wk
8 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
22 Jun
3-4 wk
15 May
13 Jul
1 wk after
28 May
3 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
26 Jun
0 wk
7 May
16 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
11 Jun
5-7 wk
7 May
16 Jul
0 wk
7 May
6 Jul
0 wk
Potato
Solanum tuberosum
11 – 25 Apr
20 May
4-6 wk
23 May
17 Jun
2 wk after
23 May
7 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
11 Jun
5-7 wk
7 May
16 Jul
0 wk
11 May
6 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
24 Apr – 1 May
3-4 wk
22 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
25 May
3-4 wk
15 May
15 Jun
1 wk after
28 May
5 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
23 Jun
4-6 wk
7 May
21 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
30 Jun
3-4 wk
7 May
21 Jul
0 wk
11 May
11 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
23 Jun
4-6 wk
7 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Apr
24 May
2-4 wk
7 May
7 Jun
0 wk
7 May
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
4 Jun
1 wk after
11 May
25 May
1 wk after
Spinach
Spinacia oleracea
9 – 16 Apr
25 Jul
3-4 wk
7 May
15 Aug
0 wk
3 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
13 – 27 Mar
6-8 wk
8 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
10 – 24 Apr
2-4 wk
8 May
0 wk
28 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
23 Jun
4-6 wk
7 May
21 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
15 Jun
3-4 wk
7 May
6 Jul
0 wk
11 May
26 Jun
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
Season too short
10 – 24 Apr
4-6 wk
22 May
2 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
11 May
8-10 wk
7 May
6 Jul
0 wk
11 Jun
26 Jun
5 wk after
Dill
Anethum graveolens
11 May
13 Jul
1 wk after
Wild chives
Allium schoenoprasum
12 – 26 Mar
4 Jun
6-8 wk
7 May
16 Jul
0 wk
11 May
6 Jul
1 wk after
Spearmint
Mentha spicata
12 Feb – 12 Mar
21 May
8-12 wk
7 May
16 Jul
0 wk
11 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
7 May
2 Aug
0 wk
28 May
23 Jul
3 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
6 May
8-10 wk
15 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
11 May
8-10 wk
7 May
6 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
25 May
6-8 wk
7 May
6 Jul
0 wk
11 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
25 May
6-8 wk
7 May
6 Jul
0 wk
11 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
18 Mar
10-14 wk
15 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
24 Apr – 1 May
3-4 wk
22 May
2 wk after
Cornflower
Centaurea cyanus
7 May
16 Jul
0 wk
11 May
6 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
27 Feb – 13 Mar
19 Mar
8-10 wk
8 May
14 May
0 wk
Sweet William
Dianthus barbatus
12 – 26 Mar
6-8 wk
7 May
0 wk
23 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
13 – 27 Mar
2 Apr
6-8 wk
8 May
14 May
0 wk
17 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
20 Mar – 3 Apr
27 Mar
6-8 wk
15 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
2 – 30 Apr
10 Apr
4-8 wk
28 May
3 wk after
28 May
3 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
28 May
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
27 Feb – 27 Mar
8 May
8-12 wk
22 May
3 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
13 – 27 Mar
12 Apr
6-8 wk
8 May
24 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
4 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
8 Apr
8-10 wk
15 May
3 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
21 Jun
0 wk
11 May
11 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
13 – 27 Mar
23 Mar
6-8 wk
8 May
0 wk
17 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
8 Apr
8-12 wk
15 May
3 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
13 Feb – 13 Mar
22 Mar
8-12 wk
8 May
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
27 Mar – 10 Apr
6-8 wk
22 May
2 wk after
Corn poppy
Papaver rhoeas
7 May
6 Jul
0 wk
11 May
26 Jun
1 wk after
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
1 May
8-12 wk
7 May
26 Jun
0 wk
23 May
16 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
13 – 27 Mar
29 Mar
8-10 wk
22 May
24 May
2 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
1 Jun
5-8 wk
7 May
6 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
25 May
6-8 wk
7 May
6 Jul
0 wk
28 May
26 Jun
3 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
5 May
6-8 wk
7 May
16 Jun
0 wk
28 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
10 – 24 Apr
4-6 wk
22 May
2 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
21 May
8-10 wk
7 May
16 Jul
0 wk
23 May
6 Jul
2 wk after
Petunia
Petunia
Greenhouse
13 Feb – 13 Mar
19 Mar
8-12 wk
8 May
14 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
22 Apr
6-8 wk
15 May
3 Jun
1 wk after
25 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
27 Mar – 10 Apr
20 Apr
4-6 wk
8 May
18 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
17 Apr – 1 May
3-5 wk
22 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
27 Mar – 10 Apr
25 Apr
4-6 wk
8 May
23 May
0 wk
28 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
11 Mar – 8 Apr
8-12 wk
3 Jun
4 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
11 Apr
8-12 wk
7 May
6 Jun
0 wk
11 Jun
5 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
5 Apr
6-8 wk
7 May
17 May
0 wk
28 May
3 wk after
Safflower
Carthamus tinctorius
7 May
16 Jun
0 wk
11 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
25 May
6-8 wk
7 May
6 Jul
0 wk
19 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
29 May
4-6 wk
7 May
26 Jun
0 wk
28 May
16 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
27 Feb – 13 Mar
10-12 wk
22 May
2 wk after
Sunflower
Helianthus annuus
6 – 13 May
26 May
3-4 wk
3 Jun
16 Jun
4 wk after
11 Jun
5 wk after
China aster
Callistephus chinensis
8 – 22 Apr
15 May
6-8 wk
3 Jun
26 Jun
4 wk after
25 Jun
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
12 – 26 Mar
12 Apr
6-8 wk
7 May
24 May
0 wk
28 May
3 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
28 May
3 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
11 Apr
8-12 wk
7 May
6 Jun
0 wk
11 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
13 – 27 Mar
12 Apr
6-8 wk
8 May
24 May
0 wk
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
5 May
6-8 wk
15 May
16 Jun
1 wk after
25 Jun
7 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
1 Apr
8-10 wk
7 May
27 May
0 wk
11 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
13 Mar – 10 Apr
6-10 wk
22 May
2 wk after
California goldenpoppy
Eschscholzia californica
7 May
5 Jul
0 wk
11 May
25 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
14 Apr
8-10 wk
3 Jun
9 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
5 May
6-8 wk
7 May
16 Jun
0 wk
28 May
6 Jun
3 wk after