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Method
Rel. frost
Last spring frost (0°C) 21 May Frost 1 of 4 years · 20 years of data
Frost-free season 135 days 21 May – 3 Oct
Probability that frost is over

75% = 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)
2 – 16 Apr
16 Jun
5-7 wk
21 May
21 Jul
0 wk
25 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
28 Jun
4-6 wk
21 May
26 Jul
0 wk
25 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
11 Mar – 8 Apr
4 Apr
8-12 wk
3 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
11 Jun
5-7 wk
21 May
16 Jul
0 wk
21 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
25 May – 1 Jun
29 May
3-4 wk
22 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 May
7 Jun
4-5 wk
22 Jun
5 Jul
5 wk after
9 Jul
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
1 – 8 Jun
3-4 wk
29 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
1 Apr
8-12 wk
21 May
27 May
0 wk
11 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
16 Jun
1 wk after
25 May
6 Jun
1 wk after
Maize
Zea mays
6 – 13 May
19 May
3-4 wk
3 Jun
9 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
5 Jul
3-4 wk
23 May
26 Jul
0 wk
11 Jun
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
6 Jul
0 wk
21 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
11 Jun
5-7 wk
21 May
16 Jul
0 wk
21 May
6 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
6 Jun
4-6 wk
6 Jun
4 Jul
2 wk after
6 Jun
24 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
21 Jun
5-7 wk
21 May
26 Jul
0 wk
25 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
25 May – 1 Jun
22 Jun
3-4 wk
22 Jun
13 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
22 Jun
3-4 wk
23 May
13 Jul
0 wk
11 Jun
3 Jul
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
23 Jun
4-6 wk
21 May
21 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
10 Jul
3-4 wk
21 May
31 Jul
0 wk
25 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
23 Jun
4-6 wk
21 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
2 Jun
2-4 wk
21 May
16 Jun
0 wk
21 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
16 Jun
1 wk after
25 May
6 Jun
1 wk after
Spinach
Spinacia oleracea
23 – 30 Apr
25 Jul
3-4 wk
21 May
15 Aug
0 wk
17 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
11 wk after
Garden tomato
Solanum lycopersicum
8 – 22 Apr
28 Apr
6-8 wk
3 Jun
9 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
24 Jun
2-4 wk
3 Jun
8 Jul
2 wk after
9 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
23 Jun
4-6 wk
21 May
21 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
25 Jun
3-4 wk
21 May
16 Jul
0 wk
25 May
6 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
11 – 25 May
31 May
4-6 wk
22 Jun
28 Jun
5 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
21 May
8-10 wk
21 May
16 Jul
0 wk
25 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
25 May
26 Jul
1 wk after
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
4 Jun
6-8 wk
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Spearmint
Mentha spicata
26 Feb – 26 Mar
21 May
8-12 wk
21 May
16 Jul
0 wk
25 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
21 May
15 Aug
0 wk
11 Jun
5 Aug
3 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
6 May
8-10 wk
23 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
12 – 26 Mar
11 May
8-10 wk
21 May
6 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
25 May
6-8 wk
21 May
6 Jul
0 wk
25 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
25 May
6-8 wk
21 May
6 Jul
0 wk
25 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
14 Feb – 14 Mar
7 Apr
10-14 wk
23 May
16 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
25 May – 1 Jun
7 Jun
3-4 wk
22 Jun
28 Jun
5 wk after
Cornflower
Centaurea cyanus
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Statice
Limonium sinuatum
25 Mar – 8 Apr
5 May
8-10 wk
3 Jun
30 Jun
2 wk after
Sweet William
Dianthus barbatus
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
6 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
19 May
6-8 wk
3 Jun
30 Jun
2 wk after
3 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Apr
25 May
6-8 wk
1 Jun
6 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Apr – 28 May
8 Jun
4-8 wk
25 Jun
6 Jul
5 wk after
25 Jun
26 Jun
5 wk after
Foxglove
Digitalis purpurea
12 – 26 Mar
8-10 wk
21 May
0 wk
11 Jun
3 wk after
Busy lizzie
Impatiens walleriana
30 Mar – 27 Apr
28 Jun
8-12 wk
22 Jun
23 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
29 May
6-8 wk
3 Jun
10 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Apr – 6 May
11 May
4-6 wk
3 Jun
8 Jun
2 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Mar
21 Apr
8-10 wk
23 May
16 Jun
0 wk
Love in a mist
Nigella damascena
21 May
1 Jul
0 wk
25 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
9 May
6-8 wk
3 Jun
20 Jun
2 wk after
3 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
28 Feb – 28 Mar
21 Apr
8-12 wk
23 May
16 Jun
0 wk
Cardoon
Cynara cardunculus
11 Mar – 8 Apr
22 Mar
8-12 wk
3 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
30 Mar – 27 Apr
23 Apr
8-12 wk
22 Jun
5 wk after
Globe amaranth
Gomphrena globosa
27 Apr – 11 May
7 May
6-8 wk
22 Jun
5 wk after
Corn poppy
Papaver rhoeas
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
11 May
8-12 wk
21 May
6 Jul
0 wk
6 Jun
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
13 – 27 Apr
15 May
8-10 wk
22 Jun
10 Jul
5 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
1 Jun
5-8 wk
21 May
6 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
4 Jun
6-8 wk
21 May
16 Jul
0 wk
11 Jun
6 Jul
3 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
5 May
6-8 wk
21 May
16 Jun
0 wk
11 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
11 – 25 May
16 May
4-6 wk
22 Jun
5 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
21 May
8-10 wk
21 May
16 Jul
0 wk
6 Jun
6 Jul
2 wk after
Petunia
Petunia
11 Mar – 8 Apr
5 May
8-12 wk
3 Jun
30 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Mar – 11 Apr
5 May
6-8 wk
23 May
16 Jun
0 wk
9 Jul
7 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
10 Jun
4-6 wk
3 Jun
8 Jul
2 wk after
Common morning glory
Ipomoea purpurea
18 May – 1 Jun
7 Jun
3-5 wk
22 Jun
28 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
22 Apr – 6 May
8 Jun
4-6 wk
3 Jun
6 Jul
2 wk after
9 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
20 Apr – 18 May
23 May
8-12 wk
13 Jul
18 Jul
8 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
21 Apr
8-12 wk
21 May
16 Jun
0 wk
25 Jun
5 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
5 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Safflower
Carthamus tinctorius
21 May
16 Jun
0 wk
25 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
25 May
6-8 wk
21 May
6 Jul
0 wk
3 May
26 Jun
3 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
8 Jun
4-6 wk
21 May
6 Jul
0 wk
11 Jun
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
30 Mar – 13 Apr
30 Mar
10-12 wk
22 Jun
5 wk after
Sunflower
Helianthus annuus
6 – 13 May
15 Jun
3-4 wk
3 Jun
6 Jul
2 wk after
25 Jun
26 Jun
5 wk after
China aster
Callistephus chinensis
8 – 22 Apr
4 Jun
6-8 wk
3 Jun
16 Jul
2 wk after
9 Jul
7 wk after
Annual phlox
Phlox drummondii
1 – 15 Apr
29 May
6-8 wk
27 May
10 Jul
1 wk after
9 Jul
7 wk after
Hollyhock
Alcea rosea
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
21 Apr
8-12 wk
21 May
16 Jun
0 wk
25 Jun
5 wk after
African marigold
Tagetes erecta
8 – 22 Apr
29 May
6-8 wk
3 Jun
10 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
28 Mar – 11 Apr
25 May
6-8 wk
23 May
6 Jul
0 wk
9 Jul
7 wk after
Wood sage
Salvia nemorosa
12 – 26 Mar
11 Apr
8-10 wk
21 May
6 Jun
0 wk
25 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
13 Apr – 11 May
17 May
6-10 wk
22 Jun
28 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
10 May
8-10 wk
3 Jun
5 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
5 May
6-8 wk
21 May
16 Jun
0 wk
11 Jun
3 wk after