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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 129 days 7 May – 13 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
18 Jun
5-7 wk
7 May
23 Jul
0 wk
30 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
30 Jun
4-6 wk
7 May
28 Jul
0 wk
30 Apr
18 Jul
1 wk before
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
13 Jun
5-7 wk
7 May
18 Jul
0 wk
25 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
14 May
4-5 wk
12 Jun
5 wk after
12 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
9 Mar
8-12 wk
7 May
0 wk
17 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
30 Apr
24 May
1 wk before
30 Apr
14 May
1 wk before
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
21 Jun
3-4 wk
12 May
12 Jul
1 wk after
17 May
2 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
6 Jul
0 wk
25 Apr
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
13 Jun
5-7 wk
7 May
18 Jul
0 wk
25 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
31 Mar – 14 Apr
4 May
4-6 wk
12 May
1 Jun
1 wk after
12 May
22 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
21 Jun
5-7 wk
7 May
26 Jul
0 wk
30 Apr
16 Jul
1 wk before
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
25 Apr
3-4 wk
12 May
16 May
1 wk after
17 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
25 Jun
4-6 wk
7 May
23 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
10 Jul
3-4 wk
7 May
31 Jul
0 wk
30 Apr
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
25 Jun
4-6 wk
7 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Mar – 11 Apr
15 May
2-4 wk
25 Apr
29 May
2 wk before
25 Apr
19 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Apr
24 May
1 wk before
30 Apr
14 May
1 wk before
Spinach
Spinacia oleracea
9 – 16 Apr
27 Jul
3-4 wk
7 May
17 Aug
0 wk
19 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
10 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
17 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
25 Jun
4-6 wk
7 May
23 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
25 Jun
3-4 wk
7 May
16 Jul
0 wk
30 Apr
6 Jul
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
5 – 19 Apr
4-6 wk
17 May
1 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
21 May
8-10 wk
7 May
16 Jul
0 wk
28 May
6 Jul
3 wk after
Dill
Anethum graveolens
30 Apr
12 Jul
1 wk before
Wild chives
Allium schoenoprasum
12 – 26 Mar
6 Jun
6-8 wk
7 May
18 Jul
0 wk
30 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
12 Feb – 12 Mar
23 May
8-12 wk
7 May
18 Jul
0 wk
28 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
7 May
1 Aug
0 wk
17 May
22 Jul
1 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
8 May
8-10 wk
12 May
3 Jul
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
13 May
8-10 wk
7 May
8 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
27 May
6-8 wk
7 May
8 Jul
0 wk
28 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
27 May
6-8 wk
7 May
8 Jul
0 wk
30 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
23 Mar
10-14 wk
12 May
1 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
19 – 26 Apr
3-4 wk
17 May
1 wk after
Cornflower
Centaurea cyanus
7 May
18 Jul
0 wk
30 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
28 Feb – 14 Mar
8 Apr
8-10 wk
9 May
3 Jun
0 wk
Sweet William
Dianthus barbatus
12 – 26 Mar
6-8 wk
7 May
0 wk
12 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
14 – 28 Mar
22 Apr
6-8 wk
9 May
3 Jun
0 wk
4 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
17 – 31 Mar
16 Apr
6-8 wk
12 May
28 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
22 Mar – 19 Apr
30 Apr
4-8 wk
17 May
28 May
1 wk after
17 May
18 May
1 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
17 May
1 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
22 Feb – 22 Mar
28 May
8-12 wk
17 May
23 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
2 May
6-8 wk
9 May
13 Jun
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
7 Apr
8-10 wk
12 May
2 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
1 Jul
0 wk
30 Apr
21 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
14 – 28 Mar
12 Apr
6-8 wk
9 May
24 May
0 wk
4 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
7 Apr
8-12 wk
12 May
2 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
22 Feb – 22 Mar
22 Mar
8-12 wk
17 May
17 May
1 wk after
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
16 Jul
0 wk
30 Apr
6 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
11 May
8-12 wk
7 May
6 Jul
0 wk
12 May
26 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
18 Apr
8-10 wk
17 May
13 Jun
1 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
3 Jun
5-8 wk
7 May
8 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
4 Jun
6-8 wk
7 May
16 Jul
0 wk
17 May
6 Jul
1 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
7 May
6-8 wk
7 May
18 Jun
0 wk
17 May
8 Jun
1 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
23 May
8-10 wk
7 May
18 Jul
0 wk
12 May
8 Jul
1 wk after
Petunia
Petunia
Greenhouse
14 Feb – 14 Mar
8 Apr
8-12 wk
9 May
3 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
21 Apr
6-8 wk
12 May
2 Jun
1 wk after
12 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
28 Mar – 11 Apr
10 May
4-6 wk
9 May
7 Jun
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
Fleece
5 – 19 Apr
30 Apr
4-6 wk
17 May
28 May
1 wk after
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
21 Apr
8-12 wk
7 May
16 Jun
0 wk
28 May
6 Jun
3 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
7 Apr
6-8 wk
7 May
19 May
0 wk
17 May
1 wk after
Safflower
Carthamus tinctorius
7 May
18 Jun
0 wk
30 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
27 May
6-8 wk
7 May
8 Jul
0 wk
29 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
8 Jun
4-6 wk
7 May
6 Jul
0 wk
17 May
26 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
27 Feb
10-12 wk
17 May
1 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
31 May
3-4 wk
27 May
21 Jun
3 wk after
28 May
11 Jun
3 wk after
China aster
Callistephus chinensis
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
3 wk after
12 Jun
21 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
12 – 26 Mar
2 May
6-8 wk
7 May
13 Jun
0 wk
17 May
3 Jun
1 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
17 May
1 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
21 Apr
8-12 wk
7 May
16 Jun
0 wk
28 May
6 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
2 May
6-8 wk
9 May
13 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
10 May
6-8 wk
12 May
21 Jun
1 wk after
12 Jun
5 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
11 Apr
8-10 wk
7 May
6 Jun
0 wk
28 May
3 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
3 Jul
0 wk
30 Apr
23 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
16 Apr
8-10 wk
27 May
11 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
7 May
6-8 wk
7 May
18 Jun
0 wk
17 May
8 Jun
1 wk after