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Method
Rel. frost
Last spring frost (0°C) 21 May Frost 9 of 10 years · 20 years of data
Frost-free season 100 days 21 May – 29 Aug
Probability that frost is over

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