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