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Method
Rel. frost
Last spring frost (0°C) 15 May Frost 3 of 4 years · 20 years of data
Frost-free season 123 days 15 May – 15 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)
27 Mar – 10 Apr
14 Jun
5-7 wk
15 May
19 Jul
0 wk
19 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
26 Jun
4-6 wk
15 May
24 Jul
0 wk
19 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
26 Feb – 26 Mar
5 Apr
8-12 wk
21 May
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Mar – 10 Apr
9 Jun
5-7 wk
15 May
14 Jul
0 wk
15 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
19 – 26 May
3-4 wk
16 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 May
22 May
4-5 wk
16 Jun
19 Jun
5 wk after
3 Jul
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Feb – 20 Mar
29 Mar
8-12 wk
15 May
24 May
0 wk
5 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
13 Jun
1 wk after
19 May
3 Jun
1 wk after
Maize
Zea mays
30 Apr – 7 May
7 May
3-4 wk
28 May
28 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
28 Jun
3-4 wk
17 May
19 Jul
0 wk
5 Jun
9 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
3 Jul
0 wk
15 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
9 Jun
5-7 wk
15 May
14 Jul
0 wk
15 May
4 Jul
0 wk
Potato
Solanum tuberosum
19 Apr – 3 May
24 May
4-6 wk
31 May
21 Jun
2 wk after
31 May
11 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
18 Jun
5-7 wk
15 May
23 Jul
0 wk
19 May
13 Jul
1 wk after
Pumpkin
Cucurbita pepo
19 – 26 May
4 Jun
3-4 wk
16 Jun
25 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
6 Jun
3-4 wk
17 May
27 Jun
0 wk
5 Jun
17 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
21 Jun
4-6 wk
15 May
19 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
7 Jul
3-4 wk
15 May
28 Jul
0 wk
19 May
18 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
21 Jun
4-6 wk
15 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
31 May
2-4 wk
15 May
14 Jun
0 wk
15 May
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 May
13 Jun
1 wk after
19 May
3 Jun
1 wk after
Spinach
Spinacia oleracea
17 – 24 Apr
23 Jul
3-4 wk
15 May
13 Aug
0 wk
11 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
11 wk after
Garden tomato
Solanum lycopersicum
2 – 16 Apr
16 Apr
6-8 wk
28 May
28 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
30 Apr – 14 May
6 Jun
2-4 wk
28 May
20 Jun
2 wk after
3 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
21 Jun
4-6 wk
15 May
19 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
22 Jun
3-4 wk
15 May
13 Jul
0 wk
19 May
3 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
5 – 19 May
13 May
4-6 wk
16 Jun
5 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
18 May
8-10 wk
15 May
13 Jul
0 wk
19 Jun
3 Jul
5 wk after
Dill
Anethum graveolens
19 May
19 Jul
1 wk after
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
2 Jun
6-8 wk
15 May
14 Jul
0 wk
19 May
4 Jul
1 wk after
Spearmint
Mentha spicata
20 Feb – 20 Mar
19 May
8-12 wk
15 May
14 Jul
0 wk
19 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
15 May
8 Aug
0 wk
5 Jun
29 Jul
3 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
4 May
8-10 wk
17 May
29 Jun
0 wk
Common thyme
Thymus vulgaris
6 – 20 Mar
9 May
8-10 wk
15 May
4 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
23 May
6-8 wk
15 May
4 Jul
0 wk
19 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
23 May
6-8 wk
15 May
4 Jul
0 wk
19 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
23 Mar
10-14 wk
17 May
1 Jun
0 wk

Annual flowers

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