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Method
Rel. frost
Last spring frost (0°C) 16 May Frost 3 of 4 years · 20 years of data
Frost-free season 111 days 16 May – 4 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)
28 Mar – 11 Apr
12 Jun
5-7 wk
16 May
17 Jul
0 wk
17 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
4 – 18 Apr
24 Jun
4-6 wk
16 May
22 Jul
0 wk
17 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
15 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
28 Mar – 11 Apr
7 Jun
5-7 wk
16 May
12 Jul
0 wk
16 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
24 Apr – 1 May
23 May
3-4 wk
22 May
13 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
24 Apr – 1 May
28 May
4-5 wk
29 May
25 Jun
2 wk after
10 Jun
15 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
21 Feb – 21 Mar
11 Mar
8-12 wk
16 May
0 wk
29 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
26 May
0 wk
17 May
0 wk
Maize
Zea mays
Fleece
24 Apr – 1 May
29 Apr
3-4 wk
22 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
24 Jun
3-4 wk
18 May
15 Jul
0 wk
29 May
5 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
16 May
29 Jun
0 wk
16 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
28 Mar – 11 Apr
7 Jun
5-7 wk
16 May
12 Jul
0 wk
16 May
2 Jul
0 wk
Potato
Solanum tuberosum
14 – 28 Apr
29 Apr
4-6 wk
26 May
27 May
1 wk after
26 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
28 Mar – 11 Apr
14 Jun
5-7 wk
16 May
19 Jul
0 wk
17 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
1 – 8 May
28 May
3-4 wk
29 May
18 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
13 May
3-4 wk
18 May
3 Jun
0 wk
29 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
4 – 18 Apr
19 Jun
4-6 wk
16 May
17 Jul
0 wk
Lettuce
Lactuca sativa
18 – 25 Apr
3 Jul
3-4 wk
16 May
24 Jul
0 wk
17 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
4 – 18 Apr
19 Jun
4-6 wk
16 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Apr – 2 May
17 May
2-4 wk
16 May
31 May
0 wk
16 May
21 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
26 May
0 wk
17 May
0 wk
Spinach
Spinacia oleracea
18 – 25 Apr
21 Jul
3-4 wk
16 May
11 Aug
0 wk
13 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
10 – 24 Jun
4-6 wk
22 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
27 Mar – 10 Apr
8 Apr
6-8 wk
22 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
24 Apr – 8 May
30 May
2-4 wk
22 May
13 Jun
1 wk after
10 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
4 – 18 Apr
19 Jun
4-6 wk
16 May
17 Jul
0 wk
Garden pea
Pisum sativum
18 – 25 Apr
18 Jun
3-4 wk
16 May
9 Jul
0 wk
17 May
29 Jun
0 wk

Herbs

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