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