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Rel. frost
Last spring frost (0°C) 12 May Frost 9 of 10 years · 20 years of data
Frost-free season 113 days 12 May – 2 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)
24 Mar – 7 Apr
15 Jun
5-7 wk
12 May
20 Jul
0 wk
16 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
27 Jun
4-6 wk
12 May
25 Jul
0 wk
16 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
10 Jun
5-7 wk
12 May
15 Jul
0 wk
12 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
21 May
4-5 wk
1 Jun
18 Jun
3 wk after
16 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
14 Mar
8-12 wk
12 May
0 wk
2 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
29 May
1 wk after
16 May
19 May
1 wk after
Maize
Zea mays
Season too short
16 – 23 Apr
3-4 wk
14 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
17 Jun
3-4 wk
17 May
8 Jul
1 wk after
2 Jun
28 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
29 Jun
0 wk
12 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
10 Jun
5-7 wk
12 May
15 Jul
0 wk
12 May
5 Jul
0 wk
Potato
Solanum tuberosum
16 – 30 Apr
13 May
4-6 wk
28 May
10 Jun
2 wk after
28 May
31 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
14 Jun
5-7 wk
12 May
19 Jul
0 wk
16 May
9 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
18 May
3-4 wk
17 May
8 Jun
1 wk after
2 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
22 Jun
4-6 wk
12 May
20 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
3 Jul
3-4 wk
12 May
24 Jul
0 wk
16 May
14 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
22 Jun
4-6 wk
12 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
19 May
2-4 wk
12 May
2 Jun
0 wk
12 May
23 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 May
29 May
1 wk after
16 May
19 May
1 wk after
Spinach
Spinacia oleracea
14 – 21 Apr
24 Jul
3-4 wk
12 May
14 Aug
0 wk
8 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
16 – 30 Apr
2-4 wk
14 May
0 wk
2 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
22 Jun
4-6 wk
12 May
20 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
18 Jun
3-4 wk
12 May
9 Jul
0 wk
16 May
29 Jun
1 wk after

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
10 – 24 Apr
4-6 wk
22 May
1 wk after
Lemon balm
Melissa officinalis
3 – 17 Mar
14 May
8-10 wk
12 May
9 Jul
0 wk
16 Jun
29 Jun
5 wk after
Dill
Anethum graveolens
16 May
8 Jul
1 wk after
Wild chives
Allium schoenoprasum
17 – 31 Mar
3 Jun
6-8 wk
12 May
15 Jul
0 wk
16 May
5 Jul
1 wk after
Spearmint
Mentha spicata
17 Feb – 17 Mar
20 May
8-12 wk
12 May
15 Jul
0 wk
16 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
12 May
28 Jul
0 wk
2 Jun
18 Jul
3 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
5 May
8-10 wk
17 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
3 – 17 Mar
10 May
8-10 wk
12 May
5 Jul
0 wk
Oregano
Origanum vulgare
17 – 31 Mar
24 May
6-8 wk
12 May
5 Jul
0 wk
16 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
17 – 31 Mar
24 May
6-8 wk
12 May
5 Jul
0 wk
16 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
17 Mar
10-14 wk
17 May
26 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
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Cornflower
Centaurea cyanus
12 May
15 Jul
0 wk
16 May
5 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
5 – 19 Mar
29 Mar
8-10 wk
14 May
24 May
0 wk
Sweet William
Dianthus barbatus
17 – 31 Mar
6-8 wk
12 May
0 wk
28 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
19 Mar – 2 Apr
12 Apr
6-8 wk
14 May
24 May
0 wk
22 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
17 – 31 Mar
15 Apr
6-8 wk
12 May
27 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
27 Mar – 24 Apr
29 Apr
4-8 wk
22 May
27 May
1 wk after
22 May
1 wk after
Foxglove
Digitalis purpurea
3 – 17 Mar
8-10 wk
12 May
0 wk
2 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
27 Feb – 27 Mar
21 Apr
8-12 wk
22 May
16 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
19 Mar – 2 Apr
22 Apr
6-8 wk
14 May
3 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
3 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
3 Apr
8-10 wk
17 May
29 May
1 wk after
Love in a mist
Nigella damascena
12 May
24 Jun
0 wk
16 May
14 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
19 Mar – 2 Apr
2 Apr
6-8 wk
14 May
14 May
0 wk
22 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
3 Apr
8-12 wk
17 May
29 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
19 Feb – 19 Mar
21 Mar
8-12 wk
14 May
16 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
27 Mar – 10 Apr
6-8 wk
22 May
1 wk after
Corn poppy
Papaver rhoeas
12 May
9 Jul
0 wk
16 May
29 Jun
1 wk after
Snapdragon
Antirrhinum majus
17 Feb – 17 Mar
4 May
8-12 wk
12 May
29 Jun
0 wk
28 May
19 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
13 – 27 Mar
8 Apr
8-10 wk
22 May
3 Jun
1 wk after
Sweet pea
Lathyrus odoratus
17 Mar – 7 Apr
31 May
5-8 wk
12 May
5 Jul
0 wk
Stock
Matthiola incana
17 – 31 Mar
28 May
6-8 wk
12 May
9 Jul
0 wk
2 Jun
29 Jun
3 wk after
Wormwood
Artemisia absinthium
17 – 31 Mar
4 May
6-8 wk
12 May
15 Jun
0 wk
2 Jun
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
10 – 24 Apr
4-6 wk
22 May
1 wk after
Garden pansy
Viola × wittrockiana
3 – 17 Mar
20 May
8-10 wk
12 May
15 Jul
0 wk
28 May
5 Jul
2 wk after
Petunia
Petunia
Greenhouse
19 Feb – 19 Mar
29 Mar
8-12 wk
14 May
24 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
17 Apr
6-8 wk
17 May
29 May
1 wk after
30 Jun
7 wk after
Common zinnia
Zinnia elegans
Season too short
2 – 16 Apr
3 Apr
4-6 wk
14 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
17 Apr – 1 May
3-5 wk
22 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
2 – 16 Apr
29 Apr
4-6 wk
14 May
27 May
0 wk
2 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
3 wk after
Bee balm
Monarda didyma
17 Feb – 17 Mar
14 Apr
8-12 wk
12 May
9 Jun
0 wk
16 Jun
5 wk after
Yarrow
Achillea millefolium
17 – 31 Mar
4 Apr
6-8 wk
12 May
16 May
0 wk
2 Jun
3 wk after
Safflower
Carthamus tinctorius
12 May
15 Jun
0 wk
16 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
17 – 31 Mar
24 May
6-8 wk
12 May
5 Jul
0 wk
24 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
31 Mar – 14 Apr
1 Jun
4-6 wk
12 May
29 Jun
0 wk
2 Jun
19 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
27 Feb – 13 Mar
10-12 wk
22 May
1 wk after
Sunflower
Helianthus annuus
4 – 11 May
25 May
3-4 wk
1 Jun
15 Jun
3 wk after
16 Jun
5 wk after
China aster
Callistephus chinensis
6 – 20 Apr
14 May
6-8 wk
1 Jun
25 Jun
3 wk after
30 Jun
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
17 – 31 Mar
22 Apr
6-8 wk
12 May
3 Jun
0 wk
2 Jun
3 wk after
Hollyhock
Alcea rosea
17 – 31 Mar
6-8 wk
12 May
0 wk
2 Jun
3 wk after
Alpine delphinium
Delphinium elatum
17 Feb – 17 Mar
14 Apr
8-12 wk
12 May
9 Jun
0 wk
16 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
19 Mar – 2 Apr
22 Apr
6-8 wk
14 May
3 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
4 May
6-8 wk
17 May
15 Jun
1 wk after
30 Jun
7 wk after
Wood sage
Salvia nemorosa
3 – 17 Mar
4 Apr
8-10 wk
12 May
30 May
0 wk
16 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
13 Mar – 10 Apr
6-10 wk
22 May
1 wk after
California goldenpoppy
Eschscholzia californica
12 May
1 Jul
0 wk
16 May
21 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
17 Apr
8-10 wk
1 Jun
12 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
17 – 31 Mar
4 May
6-8 wk
12 May
15 Jun
0 wk
2 Jun
5 Jun
3 wk after