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