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Method
Rel. frost
Last spring frost (0°C) 23 May Normal year · 20 years of data
Frost-free season 122 days 23 May – 22 Sep
Probability that frost is over

50% = 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)
4 – 18 Apr
17 Jun
5-7 wk
23 May
22 Jul
0 wk
16 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
29 Jun
4-6 wk
23 May
27 Jul
0 wk
16 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
11 Mar – 8 Apr
13 Apr
8-12 wk
3 Jun
8 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Apr
12 Jun
5-7 wk
23 May
17 Jul
0 wk
11 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
31 May – 7 Jun
3-4 wk
28 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
24 – 31 May
27 May
4-5 wk
28 Jun
5 wk after
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Feb – 28 Mar
27 Mar
8-12 wk
23 May
0 wk
2 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
11 Jun
1 wk before
16 May
1 Jun
1 wk before
Maize
Zea mays
14 – 21 May
3-4 wk
11 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
4 Jul
3-4 wk
29 May
25 Jul
1 wk after
2 Jun
15 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
7 Jul
0 wk
11 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
12 Jun
5-7 wk
23 May
17 Jul
0 wk
11 May
7 Jul
2 wk before
Potato
Solanum tuberosum
16 – 30 Apr
26 May
4-6 wk
28 May
23 Jun
1 wk after
28 May
13 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
22 Jun
5-7 wk
23 May
27 Jul
0 wk
16 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
31 May – 7 Jun
12 Jun
3-4 wk
28 Jun
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
4 Jun
3-4 wk
29 May
25 Jun
1 wk after
2 Jun
15 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
24 Jun
4-6 wk
23 May
22 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
11 Jul
3-4 wk
23 May
1 Aug
0 wk
16 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
24 Jun
4-6 wk
23 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Apr
30 May
2-4 wk
11 May
13 Jun
2 wk before
11 May
3 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 May
11 Jun
1 wk before
16 May
1 Jun
1 wk before
Spinach
Spinacia oleracea
25 Apr – 2 May
26 Jul
3-4 wk
23 May
16 Aug
0 wk
5 May
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
16 – 30 Apr
19 Apr
6-8 wk
11 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 May
14 Jun
2-4 wk
11 Jun
28 Jun
3 wk after
28 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Apr
24 Jun
4-6 wk
23 May
22 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
26 Jun
3-4 wk
23 May
17 Jul
0 wk
16 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
17 – 31 May
21 May
4-6 wk
28 Jun
5 wk after
Lemon balm
Melissa officinalis
14 – 28 Mar
22 May
8-10 wk
23 May
17 Jul
0 wk
13 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
16 May
25 Jul
1 wk before
Wild chives
Allium schoenoprasum
28 Mar – 11 Apr
5 Jun
6-8 wk
23 May
17 Jul
0 wk
16 May
7 Jul
1 wk before
Spearmint
Mentha spicata
28 Feb – 28 Mar
22 May
8-12 wk
23 May
17 Jul
0 wk
13 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
23 May
14 Aug
0 wk
2 Jun
4 Aug
1 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
7 May
8-10 wk
29 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
14 – 28 Mar
12 May
8-10 wk
23 May
7 Jul
0 wk
Oregano
Origanum vulgare
28 Mar – 11 Apr
26 May
6-8 wk
23 May
7 Jul
0 wk
13 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
28 Mar – 11 Apr
26 May
6-8 wk
23 May
7 Jul
0 wk
16 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
30 Mar
10-14 wk
29 May
8 Jun
1 wk after

Annual flowers

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