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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 123 days 4 May – 4 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
19 Jun
5-7 wk
4 May
24 Jul
0 wk
28 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
1 Jul
4-6 wk
4 May
29 Jul
0 wk
28 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Mar
14 Jun
5-7 wk
4 May
19 Jul
0 wk
21 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
3 wk after
Florence Fennel
Foeniculum vulgare
10 – 17 May
14 May
4-5 wk
14 Jun
6 wk after
14 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Feb – 9 Mar
1 Apr
8-12 wk
4 May
27 May
0 wk
17 May
17 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Apr
16 Jun
1 wk before
28 Apr
6 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)
6 – 13 Apr
3 Jul
3-4 wk
4 May
24 Jul
0 wk
17 May
14 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
9 Jul
0 wk
21 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Mar
14 Jun
5-7 wk
4 May
19 Jul
0 wk
21 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
28 Mar – 11 Apr
28 May
4-6 wk
9 May
25 Jun
1 wk after
9 May
15 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Mar
24 Jun
5-7 wk
4 May
29 Jul
0 wk
28 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
24 Apr – 1 May
10 May
3-4 wk
22 May
31 May
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
6 – 13 Apr
8 Jun
3-4 wk
4 May
29 Jun
0 wk
17 May
19 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
26 Jun
4-6 wk
4 May
24 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Apr
13 Jul
3-4 wk
4 May
3 Aug
0 wk
28 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
26 Jun
4-6 wk
4 May
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Mar – 7 Apr
3 Jun
2-4 wk
21 Apr
17 Jun
2 wk before
21 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Apr
16 Jun
1 wk before
28 Apr
6 Jun
1 wk before
Spinach
Spinacia oleracea
6 – 13 Apr
28 Jul
3-4 wk
4 May
18 Aug
0 wk
14 Apr
8 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
12 May
2-4 wk
4 May
26 May
0 wk
17 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
26 Jun
4-6 wk
4 May
24 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Apr
28 Jun
3-4 wk
4 May
19 Jul
0 wk
28 Apr
9 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
10 – 24 Apr
18 Apr
4-6 wk
22 May
3 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
24 May
8-10 wk
4 May
19 Jul
0 wk
30 May
9 Jul
4 wk after
Dill
Anethum graveolens
28 Apr
24 Jul
1 wk before
Wild chives
Allium schoenoprasum
9 – 23 Mar
7 Jun
6-8 wk
4 May
19 Jul
0 wk
28 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
9 Feb – 9 Mar
24 May
8-12 wk
4 May
19 Jul
0 wk
30 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
4 May
13 Aug
0 wk
17 May
3 Aug
2 wk after
Garden sage
Salvia officinalis
23 Feb – 9 Mar
9 May
8-10 wk
4 May
4 Jul
0 wk
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
14 May
8-10 wk
4 May
9 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Mar
28 May
6-8 wk
4 May
9 Jul
0 wk
30 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
9 – 23 Mar
28 May
6-8 wk
4 May
9 Jul
0 wk
28 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
26 Jan – 23 Feb
25 Mar
10-14 wk
4 May
3 Jun
0 wk

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
24 Apr – 1 May
25 Apr
3-4 wk
22 May
3 wk after
Cornflower
Centaurea cyanus
4 May
19 Jul
0 wk
28 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
13 – 27 Mar
25 Mar
8-10 wk
22 May
3 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
27 Mar – 10 Apr
8 Apr
6-8 wk
22 May
3 wk after
19 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
9 – 23 Mar
11 Apr
6-8 wk
4 May
23 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Apr – 2 May
8 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
8 Mar – 5 Apr
6 May
8-12 wk
31 May
1 Jul
4 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
27 Mar – 10 Apr
18 Apr
6-8 wk
22 May
30 May
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
4-6 wk
31 May
4 wk after
Chinese lantern
Physalis alkekengi
23 Feb – 9 Mar
19 Apr
8-10 wk
4 May
14 Jun
0 wk
Love in a mist
Nigella damascena
4 May
4 Jul
0 wk
28 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
27 Mar – 10 Apr
29 Mar
6-8 wk
22 May
3 wk after
19 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
9 Feb – 9 Mar
19 Apr
8-12 wk
4 May
14 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
27 Feb – 27 Mar
25 Mar
8-12 wk
22 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
27 Feb – 27 Mar
11 Mar
8-12 wk
22 May
3 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
27 Mar – 10 Apr
6-8 wk
22 May
3 wk after
Corn poppy
Papaver rhoeas
4 May
19 Jul
0 wk
28 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
14 May
8-12 wk
4 May
9 Jul
0 wk
9 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
22 Mar – 5 Apr
4 Apr
8-10 wk
31 May
4 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Mar
4 Jun
5-8 wk
4 May
9 Jul
0 wk
Stock
Matthiola incana
9 – 23 Mar
7 Jun
6-8 wk
4 May
19 Jul
0 wk
17 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Mar
8 May
6-8 wk
4 May
19 Jun
0 wk
17 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
10 – 24 Apr
4-6 wk
22 May
3 wk after
Garden pansy
Viola × wittrockiana
23 Feb – 9 Mar
24 May
8-10 wk
4 May
19 Jul
0 wk
9 May
9 Jul
1 wk after
Petunia
Petunia
Fleece
27 Feb – 27 Mar
25 Mar
8-12 wk
22 May
3 wk after
Sweet Scabious
Scabiosa atropurpurea
9 – 23 Mar
3 May
6-8 wk
4 May
14 Jun
0 wk
14 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
10 – 24 Apr
18 Apr
4-6 wk
22 May
3 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
17 Apr – 1 May
25 Apr
3-5 wk
22 May
3 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
10 – 24 Apr
25 Apr
4-6 wk
22 May
23 May
3 wk after
30 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
8 Mar – 5 Apr
10 Apr
8-12 wk
31 May
5 Jun
4 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
24 Apr
8-12 wk
4 May
19 Jun
0 wk
30 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Mar
8 Apr
6-8 wk
4 May
20 May
0 wk
17 May
2 wk after
Safflower
Carthamus tinctorius
4 May
19 Jun
0 wk
28 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Mar
28 May
6-8 wk
4 May
9 Jul
0 wk
19 Mar
29 Jun
7 wk before
Bishop's flower
Ammi majus
23 Mar – 6 Apr
11 Jun
4-6 wk
4 May
9 Jul
0 wk
17 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
27 Feb – 13 Mar
10-12 wk
22 May
3 wk after
Sunflower
Helianthus annuus
3 – 10 May
2 Jun
3-4 wk
31 May
23 Jun
4 wk after
30 May
13 Jun
4 wk after
China aster
Callistephus chinensis
5 – 19 Apr
22 May
6-8 wk
31 May
3 Jul
4 wk after
14 Jun
23 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
9 – 23 Mar
18 Apr
6-8 wk
4 May
30 May
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
24 Apr
8-12 wk
4 May
19 Jun
0 wk
30 May
9 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
27 Mar – 10 Apr
18 Apr
6-8 wk
22 May
30 May
3 wk after
Black-eyed Susan
Rudbeckia hirta
9 – 23 Mar
12 May
6-8 wk
4 May
23 Jun
0 wk
14 Jun
6 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
14 Apr
8-10 wk
4 May
9 Jun
0 wk
30 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
13 Mar – 10 Apr
4 Apr
6-10 wk
22 May
3 wk after
California goldenpoppy
Eschscholzia californica
4 May
14 Jul
0 wk
28 Apr
4 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
16 Apr
8-10 wk
31 May
11 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Mar
8 May
6-8 wk
4 May
19 Jun
0 wk
17 May
9 Jun
2 wk after