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Rel. frost
Last spring frost (0°C) 4 May Frost 9 of 10 years · 20 years of data
Frost-free season 138 days 4 May – 19 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)
16 – 30 Mar
21 Jun
5-7 wk
4 May
26 Jul
0 wk
28 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
3 Jul
4-6 wk
4 May
31 Jul
0 wk
28 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Mar
16 Jun
5-7 wk
4 May
21 Jul
0 wk
21 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
2 wk after
Florence Fennel
Foeniculum vulgare
5 – 12 May
20 May
4-5 wk
9 Jun
17 Jun
5 wk after
14 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Feb – 9 Mar
2 Apr
8-12 wk
4 May
28 May
0 wk
17 May
18 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Apr
17 Jun
1 wk before
28 Apr
7 Jun
1 wk before
Maize
Zea mays
Season too short
6 – 13 Apr
3-4 wk
4 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
4 Jul
3-4 wk
11 May
25 Jul
1 wk after
17 May
15 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
11 Jul
0 wk
21 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Mar
16 Jun
5-7 wk
4 May
21 Jul
0 wk
21 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
28 Mar – 11 Apr
31 May
4-6 wk
9 May
28 Jun
1 wk after
9 May
18 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Mar
26 Jun
5-7 wk
4 May
31 Jul
0 wk
28 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
19 – 26 Apr
11 May
3-4 wk
17 May
1 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
12 Jun
3-4 wk
11 May
3 Jul
1 wk after
17 May
23 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
28 Jun
4-6 wk
4 May
26 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Apr
15 Jul
3-4 wk
4 May
5 Aug
0 wk
28 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
28 Jun
4-6 wk
4 May
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Mar – 7 Apr
7 Jun
2-4 wk
21 Apr
21 Jun
2 wk before
21 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Apr
17 Jun
1 wk before
28 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
6 – 13 Apr
30 Jul
3-4 wk
4 May
20 Aug
0 wk
14 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 Jun
4-6 wk
17 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
9 – 23 Mar
6-8 wk
4 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
6 – 20 Apr
13 May
2-4 wk
4 May
27 May
0 wk
17 May
17 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
28 Jun
4-6 wk
4 May
26 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Apr
30 Jun
3-4 wk
4 May
21 Jul
0 wk
28 Apr
11 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
Greenhouse
5 – 19 Apr
19 Apr
4-6 wk
17 May
17 May
2 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
26 May
8-10 wk
4 May
21 Jul
0 wk
30 May
11 Jul
4 wk after
Dill
Anethum graveolens
28 Apr
25 Jul
1 wk before
Wild chives
Allium schoenoprasum
9 – 23 Mar
9 Jun
6-8 wk
4 May
21 Jul
0 wk
28 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
9 Feb – 9 Mar
26 May
8-12 wk
4 May
21 Jul
0 wk
30 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
4 May
14 Aug
0 wk
17 May
4 Aug
2 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
11 May
8-10 wk
11 May
6 Jul
1 wk after
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
16 May
8-10 wk
4 May
11 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Mar
30 May
6-8 wk
4 May
11 Jul
0 wk
30 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
9 – 23 Mar
30 May
6-8 wk
4 May
11 Jul
0 wk
28 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
31 Mar
10-14 wk
11 May
9 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
Greenhouse
19 – 26 Apr
26 Apr
3-4 wk
17 May
17 May
2 wk after
Cornflower
Centaurea cyanus
4 May
21 Jul
0 wk
28 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
8 – 22 Mar
30 Mar
8-10 wk
17 May
25 May
2 wk after
Sweet William
Dianthus barbatus
9 – 23 Mar
6-8 wk
4 May
0 wk
9 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
22 Mar – 5 Apr
13 Apr
6-8 wk
17 May
25 May
2 wk after
19 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
16 – 30 Mar
17 Apr
6-8 wk
11 May
29 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Apr – 2 May
9 Apr
4-8 wk
30 May
4 wk after
30 May
4 wk after
Foxglove
Digitalis purpurea
23 Feb – 9 Mar
8-10 wk
4 May
0 wk
17 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
3 – 31 Mar
7 May
8-12 wk
26 May
2 Jul
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
22 Mar – 5 Apr
23 Apr
6-8 wk
17 May
4 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 Apr
4-6 wk
26 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
20 Apr
8-10 wk
11 May
15 Jun
1 wk after
Love in a mist
Nigella damascena
4 May
6 Jul
0 wk
28 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
22 Mar – 5 Apr
3 Apr
6-8 wk
17 May
2 wk after
19 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
20 Apr
8-12 wk
11 May
15 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
22 Feb – 22 Mar
27 Mar
8-12 wk
17 May
22 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
12 Mar
8-12 wk
17 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
26 Mar
6-8 wk
17 May
2 wk after
Corn poppy
Papaver rhoeas
4 May
21 Jul
0 wk
28 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
16 May
8-12 wk
4 May
11 Jul
0 wk
9 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
Fleece
17 – 31 Mar
9 Apr
8-10 wk
26 May
4 Jun
3 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Mar
6 Jun
5-8 wk
4 May
11 Jul
0 wk
Stock
Matthiola incana
9 – 23 Mar
9 Jun
6-8 wk
4 May
21 Jul
0 wk
17 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Mar
10 May
6-8 wk
4 May
21 Jun
0 wk
17 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
2 wk after
Garden pansy
Viola × wittrockiana
23 Feb – 9 Mar
26 May
8-10 wk
4 May
21 Jul
0 wk
9 May
11 Jul
1 wk after
Petunia
Petunia
Fleece
22 Feb – 22 Mar
30 Mar
8-12 wk
17 May
25 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
4 May
6-8 wk
11 May
15 Jun
1 wk after
14 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
5 – 19 Apr
19 Apr
4-6 wk
17 May
17 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
12 – 26 Apr
26 Apr
3-5 wk
17 May
17 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
5 – 19 Apr
1 May
4-6 wk
17 May
29 May
2 wk after
30 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
3 – 31 Mar
11 Apr
8-12 wk
26 May
6 Jun
3 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
26 Apr
8-12 wk
4 May
21 Jun
0 wk
30 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Mar
10 Apr
6-8 wk
4 May
22 May
0 wk
17 May
2 wk after
Safflower
Carthamus tinctorius
4 May
21 Jun
0 wk
28 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Mar
30 May
6-8 wk
4 May
11 Jul
0 wk
19 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
23 Mar – 6 Apr
13 Jun
4-6 wk
4 May
11 Jul
0 wk
17 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
28 Feb
10-12 wk
17 May
2 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
8 Jun
3-4 wk
26 May
29 Jun
3 wk after
30 May
19 Jun
4 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
28 May
6-8 wk
26 May
9 Jul
3 wk after
14 Jun
29 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
9 – 23 Mar
23 Apr
6-8 wk
4 May
4 Jun
0 wk
30 May
4 wk after
Hollyhock
Alcea rosea
9 – 23 Mar
6-8 wk
4 May
0 wk
17 May
2 wk after
Alpine delphinium
Delphinium elatum
9 Feb – 9 Mar
26 Apr
8-12 wk
4 May
21 Jun
0 wk
30 May
11 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
22 Mar – 5 Apr
23 Apr
6-8 wk
17 May
4 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
18 May
6-8 wk
11 May
29 Jun
1 wk after
14 Jun
19 Jun
6 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
16 Apr
8-10 wk
4 May
11 Jun
0 wk
30 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
8 Mar – 5 Apr
5 Apr
6-10 wk
17 May
17 May
2 wk after
California goldenpoppy
Eschscholzia californica
4 May
19 Jul
0 wk
28 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
22 Apr
8-10 wk
26 May
17 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Mar
10 May
6-8 wk
4 May
21 Jun
0 wk
17 May
11 Jun
2 wk after