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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 3 of 4 years · 20 years of data
Frost-free season 137 days 7 May – 21 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)
19 Mar – 2 Apr
20 Jun
5-7 wk
7 May
25 Jul
0 wk
1 May
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
2 Jul
4-6 wk
7 May
30 Jul
0 wk
1 May
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
4 Mar – 1 Apr
4 Apr
8-12 wk
27 May
30 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
15 Jun
5-7 wk
7 May
20 Jul
0 wk
24 Apr
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
15 – 22 May
29 May
3-4 wk
12 Jun
19 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
24 May
4-5 wk
12 Jun
21 Jun
5 wk after
17 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
20 – 27 May
23 May
3-4 wk
17 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
3 Apr
8-12 wk
7 May
29 May
0 wk
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 May
18 Jun
1 wk before
1 May
8 Jun
1 wk before
Maize
Zea mays
29 Apr – 6 May
19 May
3-4 wk
27 May
9 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Apr
9 Jul
3-4 wk
12 May
30 Jul
1 wk after
20 May
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
10 Jul
0 wk
24 Apr
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
15 Jun
5-7 wk
7 May
20 Jul
0 wk
24 Apr
10 Jul
2 wk before
Potato
Solanum tuberosum
31 Mar – 14 Apr
7 Jun
4-6 wk
12 May
5 Jul
1 wk after
12 May
25 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
25 Jun
5-7 wk
7 May
30 Jul
0 wk
1 May
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
15 – 22 May
15 Jun
3-4 wk
12 Jun
6 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Apr
13 Jun
3-4 wk
12 May
4 Jul
1 wk after
20 May
24 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
27 Jun
4-6 wk
7 May
25 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
14 Jul
3-4 wk
7 May
4 Aug
0 wk
1 May
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
27 Jun
4-6 wk
7 May
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Mar – 10 Apr
6 Jun
2-4 wk
24 Apr
20 Jun
2 wk before
24 Apr
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 May
18 Jun
1 wk before
1 May
8 Jun
1 wk before
Spinach
Spinacia oleracea
9 – 16 Apr
29 Jul
3-4 wk
7 May
19 Aug
0 wk
17 Apr
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
11 wk after
Garden tomato
Solanum lycopersicum
1 – 15 Apr
28 Apr
6-8 wk
27 May
9 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
29 Apr – 13 May
17 Jun
2-4 wk
27 May
1 Jul
3 wk after
17 Jun
21 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
27 Jun
4-6 wk
7 May
25 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
29 Jun
3-4 wk
7 May
20 Jul
0 wk
1 May
10 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
1 – 15 May
24 May
4-6 wk
12 Jun
21 Jun
5 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
25 May
8-10 wk
7 May
20 Jul
0 wk
2 Jun
10 Jul
4 wk after
Dill
Anethum graveolens
1 May
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
12 – 26 Mar
8 Jun
6-8 wk
7 May
20 Jul
0 wk
1 May
10 Jul
1 wk before
Spearmint
Mentha spicata
12 Feb – 12 Mar
25 May
8-12 wk
7 May
20 Jul
0 wk
2 Jun
10 Jul
4 wk after
Coriander
Coriandrum sativum
7 May
19 Aug
0 wk
20 May
9 Aug
2 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
10 May
8-10 wk
12 May
5 Jul
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
15 May
8-10 wk
7 May
10 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
29 May
6-8 wk
7 May
10 Jul
0 wk
2 Jun
30 Jun
4 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
29 May
6-8 wk
7 May
10 Jul
0 wk
1 May
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
28 Mar
10-14 wk
12 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
15 – 22 May
31 May
3-4 wk
12 Jun
21 Jun
5 wk after
Cornflower
Centaurea cyanus
7 May
20 Jul
0 wk
1 May
10 Jul
1 wk before
Statice
Limonium sinuatum
18 Mar – 1 Apr
3 May
8-10 wk
27 May
28 Jun
3 wk after
Sweet William
Dianthus barbatus
12 – 26 Mar
6-8 wk
7 May
0 wk
12 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
1 – 15 Apr
17 May
6-8 wk
27 May
28 Jun
3 wk after
20 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
25 Mar – 8 Apr
23 May
6-8 wk
20 May
4 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
7 Apr – 5 May
6 Jun
4-8 wk
2 Jun
4 Jul
4 wk after
2 Jun
24 Jun
4 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
20 May
2 wk after
Busy lizzie
Impatiens walleriana
20 Mar – 17 Apr
23 Jun
8-12 wk
12 Jun
18 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
1 – 15 Apr
27 May
6-8 wk
27 May
8 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
15 – 29 Apr
6 May
4-6 wk
27 May
3 Jun
3 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Mar
25 Apr
8-10 wk
12 May
20 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
5 Jul
0 wk
1 May
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
1 – 15 Apr
7 May
6-8 wk
27 May
18 Jun
3 wk after
20 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
25 Apr
8-12 wk
12 May
20 Jun
1 wk after
Cardoon
Cynara cardunculus
4 Mar – 1 Apr
26 Mar
8-12 wk
27 May
3 wk after
Regal-foxtail
Ptilotus nobilis
20 Mar – 17 Apr
16 Apr
8-12 wk
12 Jun
5 wk after
Globe amaranth
Gomphrena globosa
17 Apr – 1 May
30 Apr
6-8 wk
12 Jun
5 wk after
Corn poppy
Papaver rhoeas
7 May
20 Jul
0 wk
1 May
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
15 May
8-12 wk
7 May
10 Jul
0 wk
12 May
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
3 – 17 Apr
13 May
8-10 wk
12 Jun
8 Jul
5 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
5 Jun
5-8 wk
7 May
10 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
8 Jun
6-8 wk
7 May
20 Jul
0 wk
20 May
10 Jul
2 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
9 May
6-8 wk
7 May
20 Jun
0 wk
20 May
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
1 – 15 May
9 May
4-6 wk
12 Jun
5 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
25 May
8-10 wk
7 May
20 Jul
0 wk
12 May
10 Jul
1 wk after
Petunia
Petunia
4 Mar – 1 Apr
3 May
8-12 wk
27 May
28 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
9 May
6-8 wk
12 May
20 Jun
1 wk after
17 Jun
6 wk after
Common zinnia
Zinnia elegans
15 – 29 Apr
5 Jun
4-6 wk
27 May
3 Jul
3 wk after
Common morning glory
Ipomoea purpurea
8 – 22 May
31 May
3-5 wk
12 Jun
21 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
15 – 29 Apr
6 Jun
4-6 wk
27 May
4 Jul
3 wk after
17 Jun
24 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
27 Mar – 24 Apr
16 May
8-12 wk
19 Jun
11 Jul
6 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
25 Apr
8-12 wk
7 May
20 Jun
0 wk
2 Jun
10 Jun
4 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
9 Apr
6-8 wk
7 May
21 May
0 wk
20 May
2 wk after
Safflower
Carthamus tinctorius
7 May
20 Jun
0 wk
1 May
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
29 May
6-8 wk
7 May
10 Jul
0 wk
22 Mar
30 Jun
7 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
12 Jun
4-6 wk
7 May
10 Jul
0 wk
20 May
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
4 – 18 Mar
5 Apr
10-12 wk
27 May
14 Jun
3 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
5 Jun
3-4 wk
27 May
26 Jun
3 wk after
2 Jun
16 Jun
4 wk after
China aster
Callistephus chinensis
1 – 15 Apr
25 May
6-8 wk
27 May
6 Jul
3 wk after
17 Jun
26 Jun
6 wk after
Annual phlox
Phlox drummondii
22 Mar – 5 Apr
27 May
6-8 wk
17 May
8 Jul
1 wk after
17 Jun
28 Jun
6 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
20 May
2 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
25 Apr
8-12 wk
7 May
20 Jun
0 wk
2 Jun
10 Jun
4 wk after
African marigold
Tagetes erecta
1 – 15 Apr
27 May
6-8 wk
27 May
8 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
15 May
6-8 wk
12 May
26 Jun
1 wk after
17 Jun
6 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
15 Apr
8-10 wk
7 May
10 Jun
0 wk
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
3 Apr – 1 May
10 May
6-10 wk
12 Jun
21 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
7 May
20 Jul
0 wk
1 May
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
26 Apr
8-10 wk
27 May
21 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
9 May
6-8 wk
7 May
20 Jun
0 wk
20 May
10 Jun
2 wk after