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Method
Rel. frost
Last spring frost (0°C) 9 May Frost 3 of 4 years · 20 years of data
Frost-free season 135 days 9 May – 21 Sep
Probability that frost is over

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

Herbs

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