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