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Method
Rel. frost
Last spring frost (0°C) 24 May Normal year · 20 years of data
Frost-free season 117 days 24 May – 18 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)
5 – 19 Apr
13 Jun
5-7 wk
24 May
18 Jul
0 wk
25 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Apr
25 Jun
4-6 wk
24 May
23 Jul
0 wk
25 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
12 Mar – 9 Apr
13 Apr
8-12 wk
4 Jun
8 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Apr
8 Jun
5-7 wk
24 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
30 May – 6 Jun
3-4 wk
27 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
23 – 30 May
27 May
4-5 wk
27 Jun
5 wk after
6 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
1 – 29 Mar
29 Mar
8-12 wk
24 May
24 May
0 wk
6 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
13 Jun
0 wk
25 May
3 Jun
0 wk
Maize
Zea mays
Fleece
7 – 14 May
28 May
3-4 wk
4 Jun
18 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
28 Jun
3-4 wk
30 May
19 Jul
1 wk after
6 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 May
3 Jul
0 wk
24 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Apr
8 Jun
5-7 wk
24 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Potato
Solanum tuberosum
22 Apr – 6 May
26 May
4-6 wk
3 Jun
23 Jun
1 wk after
3 Jun
13 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Apr
18 Jun
5-7 wk
24 May
23 Jul
0 wk
25 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
30 May – 6 Jun
12 Jun
3-4 wk
27 Jun
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
10 Jun
3-4 wk
30 May
1 Jul
1 wk after
6 Jun
21 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Apr
20 Jun
4-6 wk
24 May
18 Jul
0 wk
Lettuce
Lactuca sativa
26 Apr – 3 May
7 Jul
3-4 wk
24 May
28 Jul
0 wk
25 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Apr
20 Jun
4-6 wk
24 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Apr – 10 May
30 May
2-4 wk
24 May
13 Jun
0 wk
24 May
3 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
13 Jun
0 wk
25 May
3 Jun
0 wk
Spinach
Spinacia oleracea
26 Apr – 3 May
22 Jul
3-4 wk
24 May
12 Aug
0 wk
21 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
18 Jun – 2 Jul
4-6 wk
30 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
9 – 23 Apr
7 May
6-8 wk
4 Jun
18 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
16 – 30 May
14 Jun
2-4 wk
13 Jun
28 Jun
3 wk after
6 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Apr
20 Jun
4-6 wk
24 May
18 Jul
0 wk
Garden pea
Pisum sativum
26 Apr – 3 May
22 Jun
3-4 wk
24 May
13 Jul
0 wk
25 May
3 Jul
0 wk

Herbs

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