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Rel. frost
Last spring frost (0°C) 7 May Frost 9 of 10 years · 20 years of data
Frost-free season 118 days 7 May – 2 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)
19 Mar – 2 Apr
15 Jun
5-7 wk
7 May
20 Jul
0 wk
11 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
27 Jun
4-6 wk
7 May
25 Jul
0 wk
11 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
10 Jun
5-7 wk
7 May
15 Jul
0 wk
7 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
22 – 29 Apr
24 May
4-5 wk
27 May
21 Jun
3 wk after
11 Jun
11 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 May
3-4 wk
17 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
11 Mar
8-12 wk
7 May
0 wk
28 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
26 May
1 wk after
11 May
16 May
1 wk after
Maize
Zea mays
Season too short
11 – 18 Apr
3-4 wk
9 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Apr
20 Jun
3-4 wk
12 May
11 Jul
1 wk after
28 May
1 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
4 Jul
0 wk
7 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
10 Jun
5-7 wk
7 May
15 Jul
0 wk
7 May
5 Jul
0 wk
Potato
Solanum tuberosum
11 – 25 Apr
13 May
4-6 wk
23 May
10 Jun
2 wk after
23 May
31 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
19 Jun
5-7 wk
7 May
24 Jul
0 wk
11 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Apr
15 May
3-4 wk
12 May
5 Jun
1 wk after
28 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
22 Jun
4-6 wk
7 May
20 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
8 Jul
3-4 wk
7 May
29 Jul
0 wk
11 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
22 Jun
4-6 wk
7 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Apr
15 May
2-4 wk
7 May
29 May
0 wk
7 May
19 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
26 May
1 wk after
11 May
16 May
1 wk after
Spinach
Spinacia oleracea
9 – 16 Apr
24 Jul
3-4 wk
7 May
14 Aug
0 wk
3 May
4 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
14 – 28 Mar
6-8 wk
9 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
11 – 25 Apr
2-4 wk
9 May
0 wk
28 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
22 Jun
4-6 wk
7 May
20 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
23 Jun
3-4 wk
7 May
14 Jul
0 wk
11 May
4 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
Season too short
5 – 19 Apr
4-6 wk
17 May
1 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
19 May
8-10 wk
7 May
14 Jul
0 wk
11 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
11 May
11 Jul
1 wk after
Wild chives
Allium schoenoprasum
12 – 26 Mar
3 Jun
6-8 wk
7 May
15 Jul
0 wk
11 May
5 Jul
1 wk after
Spearmint
Mentha spicata
12 Feb – 12 Mar
20 May
8-12 wk
7 May
15 Jul
0 wk
11 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
7 May
31 Jul
0 wk
28 May
21 Jul
3 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
5 May
8-10 wk
12 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
10 May
8-10 wk
7 May
5 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
24 May
6-8 wk
7 May
5 Jul
0 wk
11 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
24 May
6-8 wk
7 May
5 Jul
0 wk
11 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
18 Mar
10-14 wk
12 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
19 – 26 Apr
3-4 wk
17 May
1 wk after
Cornflower
Centaurea cyanus
7 May
15 Jul
0 wk
11 May
5 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
28 Feb – 14 Mar
26 Mar
8-10 wk
9 May
21 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
14 – 28 Mar
9 Apr
6-8 wk
9 May
21 May
0 wk
17 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
12 – 26 Mar
15 Apr
6-8 wk
7 May
27 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
22 Mar – 19 Apr
29 Apr
4-8 wk
17 May
27 May
1 wk after
17 May
17 May
1 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
Fleece
4 Mar – 1 Apr
26 Mar
8-12 wk
27 May
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
19 Apr
6-8 wk
9 May
31 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
15 – 29 Apr
4-6 wk
27 May
3 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Mar
6 Apr
8-10 wk
12 May
1 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
29 Jun
0 wk
11 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
14 – 28 Mar
30 Mar
6-8 wk
9 May
11 May
0 wk
17 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
6 Apr
8-12 wk
12 May
1 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
14 Feb – 14 Mar
21 Mar
8-12 wk
9 May
16 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
1 wk after
Corn poppy
Papaver rhoeas
7 May
14 Jul
0 wk
11 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
9 May
8-12 wk
7 May
4 Jul
0 wk
23 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
5 Apr
8-10 wk
17 May
31 May
1 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
31 May
5-8 wk
7 May
5 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
2 Jun
6-8 wk
7 May
14 Jul
0 wk
28 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
4 May
6-8 wk
7 May
15 Jun
0 wk
28 May
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
1 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
20 May
8-10 wk
7 May
15 Jul
0 wk
23 May
5 Jul
2 wk after
Petunia
Petunia
Greenhouse
14 Feb – 14 Mar
26 Mar
8-12 wk
9 May
21 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
20 Apr
6-8 wk
12 May
1 Jun
1 wk after
25 Jun
7 wk after
Common zinnia
Zinnia elegans
Season too short
28 Mar – 11 Apr
1 Apr
4-6 wk
9 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
12 – 26 Apr
3-5 wk
17 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
28 Mar – 11 Apr
29 Apr
4-6 wk
9 May
27 May
0 wk
28 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
4 Mar – 1 Apr
8-12 wk
27 May
3 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
19 Apr
8-12 wk
7 May
14 Jun
0 wk
11 Jun
5 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
4 Apr
6-8 wk
7 May
16 May
0 wk
28 May
3 wk after
Safflower
Carthamus tinctorius
7 May
15 Jun
0 wk
11 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
24 May
6-8 wk
7 May
5 Jul
0 wk
19 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
6 Jun
4-6 wk
7 May
4 Jul
0 wk
28 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
10-12 wk
17 May
1 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
26 May
3-4 wk
27 May
16 Jun
3 wk after
11 Jun
5 wk after
China aster
Callistephus chinensis
1 – 15 Apr
15 May
6-8 wk
27 May
26 Jun
3 wk after
25 Jun
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
12 – 26 Mar
19 Apr
6-8 wk
7 May
31 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
19 Apr
8-12 wk
7 May
14 Jun
0 wk
11 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
19 Apr
6-8 wk
9 May
31 May
0 wk
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
5 May
6-8 wk
12 May
16 Jun
1 wk after
25 Jun
7 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
9 Apr
8-10 wk
7 May
4 Jun
0 wk
11 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
8 Mar – 5 Apr
6-10 wk
17 May
1 wk after
California goldenpoppy
Eschscholzia californica
7 May
8 Jul
0 wk
11 May
28 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
2 Apr
8-10 wk
27 May
28 May
3 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
4 May
6-8 wk
7 May
15 Jun
0 wk
28 May
5 Jun
3 wk after