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Method
Rel. frost
Last spring frost (0°C) 28 May Normal year · 20 years of data
Frost-free season 109 days 28 May – 14 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)
9 – 23 Apr
14 Jun
5-7 wk
28 May
19 Jul
0 wk
29 May
9 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
26 Jun
4-6 wk
28 May
24 Jul
0 wk
29 May
14 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
16 Mar – 13 Apr
13 Apr
8-12 wk
8 Jun
8 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
9 Jun
5-7 wk
28 May
14 Jul
0 wk
28 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
3 – 10 Jun
3-4 wk
1 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
27 May – 3 Jun
4-5 wk
1 Jul
5 wk after
10 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
10 – 17 Jun
3-4 wk
8 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Mar – 2 Apr
25 Mar
8-12 wk
28 May
0 wk
10 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
9 Jun
0 wk
29 May
30 May
0 wk
Maize
Zea mays
Fleece
11 – 18 May
28 May
3-4 wk
8 Jun
18 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
6 – 13 May
28 Jun
3-4 wk
3 Jun
19 Jul
1 wk after
10 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
4 Jul
0 wk
28 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
9 Jun
5-7 wk
28 May
14 Jul
0 wk
28 May
4 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
21 May
4-6 wk
7 Jun
18 Jun
1 wk after
7 Jun
8 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
19 Jun
5-7 wk
28 May
24 Jul
0 wk
29 May
14 Jul
0 wk
Pumpkin
Cucurbita pepo
3 – 10 Jun
12 Jun
3-4 wk
1 Jul
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
6 – 13 May
8 Jun
3-4 wk
3 Jun
29 Jun
1 wk after
10 Jun
19 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
8 Jul
3-4 wk
28 May
29 Jul
0 wk
29 May
19 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
31 May
2-4 wk
28 May
14 Jun
0 wk
28 May
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
9 Jun
0 wk
29 May
30 May
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
23 Jul
3-4 wk
28 May
13 Aug
0 wk
25 May
3 Aug
0 wk
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
13 – 27 Apr
7 May
6-8 wk
8 Jun
18 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
20 May – 3 Jun
14 Jun
2-4 wk
17 Jun
28 Jun
3 wk after
10 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
23 Jun
3-4 wk
28 May
14 Jul
0 wk
29 May
4 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
20 May – 3 Jun
21 May
4-6 wk
1 Jul
5 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
19 May
8-10 wk
28 May
14 Jul
0 wk
22 Jun
4 Jul
4 wk after
Dill
Anethum graveolens
29 May
19 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 Apr
2 Jun
6-8 wk
28 May
14 Jul
0 wk
29 May
4 Jul
0 wk
Spearmint
Mentha spicata
5 Mar – 2 Apr
19 May
8-12 wk
28 May
14 Jul
0 wk
22 Jun
4 Jul
4 wk after
Coriander
Coriandrum sativum
28 May
8 Aug
0 wk
10 Jun
29 Jul
2 wk after
Garden sage
Salvia officinalis
25 Mar – 8 Apr
4 May
8-10 wk
3 Jun
29 Jun
1 wk after
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
9 May
8-10 wk
28 May
4 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
0 wk
22 Jun
24 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
0 wk
29 May
24 Jun
0 wk
Rosemary
Salvia rosmarinus
25 Feb – 25 Mar
22 Mar
10-14 wk
3 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
3 – 10 Jun
3-4 wk
1 Jul
5 wk after
Cornflower
Centaurea cyanus
28 May
14 Jul
0 wk
29 May
4 Jul
0 wk
Statice
Limonium sinuatum
8 – 22 Apr
24 Apr
8-10 wk
17 Jun
19 Jun
3 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
22 Apr – 6 May
8 May
6-8 wk
17 Jun
19 Jun
3 wk after
3 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
17 Apr – 1 May
13 May
6-8 wk
12 Jun
24 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
27 Apr – 25 May
27 May
4-8 wk
22 Jun
24 Jun
4 wk after
22 Jun
4 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
10 Jun
2 wk after
Busy lizzie
Impatiens walleriana
8 Apr – 6 May
14 Jun
8-12 wk
1 Jul
9 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
22 Apr – 6 May
18 May
6-8 wk
17 Jun
29 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
6 – 20 May
4-6 wk
17 Jun
3 wk after
Chinese lantern
Physalis alkekengi
25 Mar – 8 Apr
14 Apr
8-10 wk
3 Jun
9 Jun
1 wk after
Love in a mist
Nigella damascena
28 May
29 Jun
0 wk
29 May
19 Jun
0 wk
Strawflower
Xerochrysum bracteatum
22 Apr – 6 May
28 Apr
6-8 wk
17 Jun
3 wk after
3 Aug
10 wk after
Purple-top vervain
Verbena bonariensis
11 Mar – 8 Apr
14 Apr
8-12 wk
3 Jun
9 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
16 Mar – 13 Apr
20 Mar
8-12 wk
8 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
8 Apr – 6 May
13 Apr
8-12 wk
1 Jul
5 wk after
Globe amaranth
Gomphrena globosa
6 – 20 May
6-8 wk
1 Jul
5 wk after
Corn poppy
Papaver rhoeas
28 May
14 Jul
0 wk
29 May
4 Jul
0 wk
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
9 May
8-12 wk
28 May
4 Jul
0 wk
7 Jun
24 Jun
1 wk after
Flossflower
Ageratum houstonianum
22 Apr – 6 May
4 May
8-10 wk
1 Jul
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
30 May
5-8 wk
28 May
4 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
2 Jun
6-8 wk
28 May
14 Jul
0 wk
10 Jun
4 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
3 May
6-8 wk
28 May
14 Jun
0 wk
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
6 – 20 May
12 May
4-6 wk
17 Jun
3 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
19 May
8-10 wk
28 May
14 Jul
0 wk
7 Jun
4 Jul
1 wk after
Petunia
Petunia
25 Mar – 22 Apr
24 Apr
8-12 wk
17 Jun
19 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Apr
28 Apr
6-8 wk
3 Jun
9 Jun
1 wk after
10 Jul
6 wk after
Common zinnia
Zinnia elegans
6 – 20 May
27 May
4-6 wk
17 Jun
24 Jun
3 wk after
Common morning glory
Ipomoea purpurea
27 May – 10 Jun
28 May
3-5 wk
1 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
6 – 20 May
27 May
4-6 wk
17 Jun
24 Jun
3 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
8 Apr – 6 May
19 May
8-12 wk
1 Jul
14 Jul
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
19 Apr
8-12 wk
28 May
14 Jun
0 wk
22 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
3 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Safflower
Carthamus tinctorius
28 May
14 Jun
0 wk
29 May
4 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
23 May
6-8 wk
28 May
4 Jul
0 wk
12 May
24 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
6 Jun
4-6 wk
28 May
4 Jul
0 wk
10 Jun
24 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
25 Mar – 8 Apr
26 Mar
10-12 wk
17 Jun
3 wk after
Sunflower
Helianthus annuus
20 – 27 May
30 May
3-4 wk
17 Jun
20 Jun
3 wk after
22 Jun
4 wk after
China aster
Callistephus chinensis
22 Apr – 6 May
19 May
6-8 wk
17 Jun
30 Jun
3 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
13 – 27 Apr
18 May
6-8 wk
8 Jun
29 Jun
2 wk after
10 Jul
6 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
19 Apr
8-12 wk
28 May
14 Jun
0 wk
22 Jun
4 wk after
African marigold
Tagetes erecta
22 Apr – 6 May
18 May
6-8 wk
17 Jun
29 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Apr
9 May
6-8 wk
3 Jun
20 Jun
1 wk after
10 Jul
6 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
9 Apr
8-10 wk
28 May
4 Jun
0 wk
22 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
22 Apr – 20 May
7 May
6-10 wk
1 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
28 May
14 Jul
0 wk
29 May
4 Jul
0 wk
Painted tongue
Salpiglossis sinuata
8 – 22 Apr
22 Apr
8-10 wk
17 Jun
17 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
3 May
6-8 wk
28 May
14 Jun
0 wk
10 Jun
2 wk after