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