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Rel. frost
Last spring frost (0°C) 3 May Frost 9 of 10 years · 20 years of data
Frost-free season 128 days 3 May – 8 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)
15 – 29 Mar
17 Jun
5-7 wk
3 May
22 Jul
0 wk
26 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Mar – 5 Apr
29 Jun
4-6 wk
3 May
27 Jul
0 wk
26 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
19 Feb – 19 Mar
8-12 wk
14 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 – 29 Mar
12 Jun
5-7 wk
3 May
17 Jul
0 wk
21 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
16 – 23 Apr
3-4 wk
14 May
2 wk after
Florence Fennel
Foeniculum vulgare
4 – 11 May
13 May
4-5 wk
8 Jun
10 Jun
5 wk after
8 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
18 – 25 May
3-4 wk
15 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Feb – 8 Mar
21 Mar
8-12 wk
3 May
16 May
0 wk
13 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Apr
5 Jun
1 wk before
26 Apr
26 May
1 wk before
Maize
Zea mays
Season too short
5 – 12 Apr
3-4 wk
3 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
11 – 18 Apr
22 Jun
3-4 wk
9 May
13 Jul
1 wk after
13 May
3 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 May
30 Jun
0 wk
21 Apr
20 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 – 29 Mar
12 Jun
5-7 wk
3 May
17 Jul
0 wk
21 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
27 Mar – 10 Apr
20 May
4-6 wk
8 May
17 Jun
1 wk after
8 May
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 – 29 Mar
15 Jun
5-7 wk
3 May
20 Jul
0 wk
26 Apr
10 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
16 – 23 Apr
3-4 wk
14 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
11 – 18 Apr
23 May
3-4 wk
9 May
13 Jun
1 wk after
13 May
3 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Mar – 5 Apr
24 Jun
4-6 wk
3 May
22 Jul
0 wk
Lettuce
Lactuca sativa
5 – 12 Apr
4 Jul
3-4 wk
3 May
25 Jul
0 wk
26 Apr
15 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Mar – 5 Apr
24 Jun
4-6 wk
3 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Mar – 7 Apr
25 May
2-4 wk
21 Apr
8 Jun
2 wk before
21 Apr
29 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 Apr
5 Jun
1 wk before
26 Apr
26 May
1 wk before
Spinach
Spinacia oleracea
5 – 12 Apr
26 Jul
3-4 wk
3 May
16 Aug
0 wk
15 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
8 – 22 Mar
6-8 wk
3 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
5 – 19 Apr
7 Apr
2-4 wk
3 May
0 wk
13 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Mar – 5 Apr
24 Jun
4-6 wk
3 May
22 Jul
0 wk
Garden pea
Pisum sativum
5 – 12 Apr
19 Jun
3-4 wk
3 May
10 Jul
0 wk
26 Apr
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
2 – 16 Apr
4-6 wk
14 May
2 wk after
Lemon balm
Melissa officinalis
22 Feb – 8 Mar
15 May
8-10 wk
3 May
10 Jul
0 wk
24 May
30 Jun
3 wk after
Dill
Anethum graveolens
26 Apr
13 Jul
1 wk before
Wild chives
Allium schoenoprasum
8 – 22 Mar
5 Jun
6-8 wk
3 May
17 Jul
0 wk
26 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
8 Feb – 8 Mar
22 May
8-12 wk
3 May
17 Jul
0 wk
24 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
3 May
2 Aug
0 wk
13 May
23 Jul
1 wk after
Garden sage
Salvia officinalis
28 Feb – 14 Mar
7 May
8-10 wk
9 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
22 Feb – 8 Mar
12 May
8-10 wk
3 May
7 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Mar
26 May
6-8 wk
3 May
7 Jul
0 wk
24 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
8 – 22 Mar
26 May
6-8 wk
3 May
7 Jul
0 wk
26 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
31 Jan – 28 Feb
19 Mar
10-14 wk
9 May
28 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
16 – 23 Apr
3-4 wk
14 May
2 wk after
Cornflower
Centaurea cyanus
3 May
17 Jul
0 wk
26 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
5 – 19 Mar
20 Mar
8-10 wk
14 May
15 May
2 wk after
Sweet William
Dianthus barbatus
8 – 22 Mar
6-8 wk
3 May
0 wk
8 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
19 Mar – 2 Apr
3 Apr
6-8 wk
14 May
15 May
2 wk after
18 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
14 – 28 Mar
9 Apr
6-8 wk
9 May
21 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
18 Mar – 15 Apr
23 Apr
4-8 wk
13 May
21 May
1 wk after
13 May
1 wk after
Foxglove
Digitalis purpurea
22 Feb – 8 Mar
8-10 wk
3 May
0 wk
13 May
1 wk after
Busy lizzie
Impatiens walleriana
Fleece
27 Feb – 27 Mar
1 Apr
8-12 wk
22 May
27 May
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
19 Mar – 2 Apr
13 Apr
6-8 wk
14 May
25 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
10 – 24 Apr
4-6 wk
22 May
3 wk after
Chinese lantern
Physalis alkekengi
28 Feb – 14 Mar
8 Apr
8-10 wk
9 May
3 Jun
1 wk after
Love in a mist
Nigella damascena
3 May
25 Jun
0 wk
26 Apr
15 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
8 – 22 Mar
5 Apr
6-8 wk
3 May
17 May
0 wk
31 May
4 wk after
Purple-top vervain
Verbena bonariensis
14 Feb – 14 Mar
8 Apr
8-12 wk
9 May
3 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
19 Feb – 19 Mar
16 Mar
8-12 wk
14 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
19 Feb – 19 Mar
8-12 wk
14 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
2 wk after
Corn poppy
Papaver rhoeas
3 May
10 Jul
0 wk
26 Apr
30 Jun
1 wk before
Snapdragon
Antirrhinum majus
8 Feb – 8 Mar
5 May
8-12 wk
3 May
30 Jun
0 wk
8 May
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
13 – 27 Mar
30 Mar
8-10 wk
22 May
25 May
3 wk after
Sweet pea
Lathyrus odoratus
8 – 29 Mar
2 Jun
5-8 wk
3 May
7 Jul
0 wk
Stock
Matthiola incana
8 – 22 Mar
29 May
6-8 wk
3 May
10 Jul
0 wk
13 May
30 Jun
1 wk after
Wormwood
Artemisia absinthium
8 – 22 Mar
6 May
6-8 wk
3 May
17 Jun
0 wk
13 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
2 – 16 Apr
4-6 wk
14 May
2 wk after
Garden pansy
Viola × wittrockiana
22 Feb – 8 Mar
22 May
8-10 wk
3 May
17 Jul
0 wk
8 May
7 Jul
1 wk after
Petunia
Petunia
Fleece
19 Feb – 19 Mar
20 Mar
8-12 wk
14 May
15 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
14 – 28 Mar
22 Apr
6-8 wk
9 May
3 Jun
1 wk after
8 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
22 Mar – 5 Apr
3 May
4-6 wk
3 May
31 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
9 – 23 Apr
3-5 wk
14 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
2 – 16 Apr
23 Apr
4-6 wk
14 May
21 May
2 wk after
24 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
27 Feb – 27 Mar
6 Mar
8-12 wk
22 May
3 wk after
Bee balm
Monarda didyma
8 Feb – 8 Mar
15 Apr
8-12 wk
3 May
10 Jun
0 wk
24 May
31 May
3 wk after
Yarrow
Achillea millefolium
8 – 22 Mar
6 Apr
6-8 wk
3 May
18 May
0 wk
13 May
1 wk after
Safflower
Carthamus tinctorius
3 May
17 Jun
0 wk
26 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Mar
26 May
6-8 wk
3 May
7 Jul
0 wk
25 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
22 Mar – 5 Apr
2 Jun
4-6 wk
3 May
30 Jun
0 wk
13 May
20 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
19 Feb – 5 Mar
20 Feb
10-12 wk
14 May
2 wk after
Sunflower
Helianthus annuus
24 Apr – 1 May
27 May
3-4 wk
22 May
17 Jun
3 wk after
24 May
7 Jun
3 wk after
China aster
Callistephus chinensis
27 Mar – 10 Apr
16 May
6-8 wk
22 May
27 Jun
3 wk after
8 Jun
17 Jun
5 wk after
Annual phlox
Phlox drummondii
Fleece
8 – 22 Mar
13 Apr
6-8 wk
3 May
25 May
0 wk
24 May
3 wk after
Hollyhock
Alcea rosea
8 – 22 Mar
6-8 wk
3 May
0 wk
13 May
1 wk after
Alpine delphinium
Delphinium elatum
8 Feb – 8 Mar
15 Apr
8-12 wk
3 May
10 Jun
0 wk
24 May
31 May
3 wk after
African marigold
Tagetes erecta
Fleece
19 Mar – 2 Apr
13 Apr
6-8 wk
14 May
25 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Mar
6 May
6-8 wk
9 May
17 Jun
1 wk after
8 Jun
5 wk after
Wood sage
Salvia nemorosa
22 Feb – 8 Mar
5 Apr
8-10 wk
3 May
31 May
0 wk
24 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
5 Mar – 2 Apr
6-10 wk
14 May
2 wk after
California goldenpoppy
Eschscholzia californica
3 May
9 Jul
0 wk
26 Apr
29 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Mar
15 Apr
8-10 wk
22 May
10 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Mar
6 May
6-8 wk
3 May
17 Jun
0 wk
13 May
7 Jun
1 wk after