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