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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 1 of 4 years · 20 years of data
Frost-free season 111 days 28 May – 16 Sep
Probability that frost is over

75% = 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
12 Jun
5-7 wk
28 May
17 Jul
0 wk
29 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
24 Jun
4-6 wk
28 May
22 Jul
0 wk
29 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
11 Mar – 8 Apr
14 Apr
8-12 wk
3 Jun
9 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
7 Jun
5-7 wk
28 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
1 – 8 Jun
3-4 wk
29 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
25 May – 1 Jun
25 May
4-5 wk
29 Jun
5 wk after
10 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Mar – 2 Apr
28 Mar
8-12 wk
28 May
0 wk
10 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
12 Jun
0 wk
29 May
2 Jun
0 wk
Maize
Zea mays
Fleece
6 – 13 May
29 May
3-4 wk
3 Jun
19 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
1 Jul
3-4 wk
30 May
22 Jul
0 wk
10 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
2 Jul
0 wk
28 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
7 Jun
5-7 wk
28 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
26 May
4-6 wk
7 Jun
23 Jun
1 wk after
7 Jun
13 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
17 Jun
5-7 wk
28 May
22 Jul
0 wk
29 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
1 – 8 Jun
13 Jun
3-4 wk
29 Jun
4 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
11 Jun
3-4 wk
30 May
2 Jul
0 wk
10 Jun
22 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
6 Jul
3-4 wk
28 May
27 Jul
0 wk
29 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
29 May
2-4 wk
28 May
12 Jun
0 wk
28 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
12 Jun
0 wk
29 May
2 Jun
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
21 Jul
3-4 wk
28 May
11 Aug
0 wk
25 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
8 – 22 Apr
8 May
6-8 wk
3 Jun
19 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 May
15 Jun
2-4 wk
10 Jun
29 Jun
2 wk after
10 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
21 Jun
3-4 wk
28 May
12 Jul
0 wk
29 May
2 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
18 May – 1 Jun
22 May
4-6 wk
29 Jun
5 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
17 May
8-10 wk
28 May
12 Jul
0 wk
22 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
29 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 Apr
31 May
6-8 wk
28 May
12 Jul
0 wk
29 May
2 Jul
0 wk
Spearmint
Mentha spicata
5 Mar – 2 Apr
17 May
8-12 wk
28 May
12 Jul
0 wk
22 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
28 May
11 Aug
0 wk
10 Jun
1 Aug
2 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
2 May
8-10 wk
30 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
7 May
8-10 wk
28 May
2 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
21 May
6-8 wk
28 May
2 Jul
0 wk
22 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
21 May
6-8 wk
28 May
2 Jul
0 wk
29 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
28 Mar
10-14 wk
30 May
6 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
1 – 8 Jun
3-4 wk
29 Jun
5 wk after
Cornflower
Centaurea cyanus
28 May
12 Jul
0 wk
29 May
2 Jul
0 wk
Statice
Limonium sinuatum
1 – 15 Apr
24 Apr
8-10 wk
10 Jun
19 Jun
2 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
15 – 29 Apr
8 May
6-8 wk
10 Jun
19 Jun
2 wk after
3 Aug
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
27 Apr – 25 May
31 May
4-8 wk
22 Jun
28 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
6 Apr – 4 May
17 Jun
8-12 wk
29 Jun
12 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
18 May
6-8 wk
10 Jun
29 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
30 Apr
4-6 wk
10 Jun
2 wk after
Chinese lantern
Physalis alkekengi
21 Mar – 4 Apr
17 Apr
8-10 wk
30 May
12 Jun
0 wk
Love in a mist
Nigella damascena
28 May
27 Jun
0 wk
29 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
15 – 29 Apr
28 Apr
6-8 wk
10 Jun
2 wk after
3 Aug
10 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
17 Apr
8-12 wk
30 May
12 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
11 Mar – 8 Apr
18 Mar
8-12 wk
3 Jun
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
18 Mar – 15 Apr
22 Apr
8-12 wk
10 Jun
17 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
15 – 29 Apr
6 May
6-8 wk
10 Jun
17 Jun
2 wk after
Corn poppy
Papaver rhoeas
28 May
12 Jul
0 wk
29 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
7 May
8-12 wk
28 May
2 Jul
0 wk
7 Jun
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
20 Apr – 4 May
4 May
8-10 wk
29 Jun
29 Jun
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
28 May
5-8 wk
28 May
2 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
31 May
6-8 wk
28 May
12 Jul
0 wk
10 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
1 May
6-8 wk
28 May
12 Jun
0 wk
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
29 Apr – 13 May
15 May
4-6 wk
10 Jun
12 Jun
2 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
17 May
8-10 wk
28 May
12 Jul
0 wk
7 Jun
2 Jul
1 wk after
Petunia
Petunia
18 Mar – 15 Apr
24 Apr
8-12 wk
10 Jun
19 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
1 May
6-8 wk
30 May
12 Jun
0 wk
10 Jul
6 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
30 May
4-6 wk
10 Jun
27 Jun
2 wk after
Common morning glory
Ipomoea purpurea
25 May – 8 Jun
29 May
3-5 wk
29 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
31 May
4-6 wk
10 Jun
28 Jun
2 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
27 Apr – 25 May
14 May
8-12 wk
20 Jul
8 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
17 Apr
8-12 wk
28 May
12 Jun
0 wk
22 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Safflower
Carthamus tinctorius
28 May
12 Jun
0 wk
29 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
21 May
6-8 wk
28 May
2 Jul
0 wk
12 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
4 Jun
4-6 wk
28 May
2 Jul
0 wk
10 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
18 Mar – 1 Apr
30 Mar
10-12 wk
10 Jun
2 wk after
Sunflower
Helianthus annuus
13 – 20 May
5 Jun
3-4 wk
10 Jun
26 Jun
2 wk after
22 Jun
4 wk after
China aster
Callistephus chinensis
15 – 29 Apr
25 May
6-8 wk
10 Jun
6 Jul
2 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
18 May
6-8 wk
3 Jun
29 Jun
1 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
17 Apr
8-12 wk
28 May
12 Jun
0 wk
22 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
18 May
6-8 wk
10 Jun
29 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
15 May
6-8 wk
30 May
26 Jun
0 wk
10 Jul
6 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
7 Apr
8-10 wk
28 May
2 Jun
0 wk
22 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
20 Apr – 18 May
8 May
6-10 wk
29 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
28 May
12 Jul
0 wk
29 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
1 – 15 Apr
27 Apr
8-10 wk
10 Jun
22 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
1 May
6-8 wk
28 May
12 Jun
0 wk
10 Jun
2 wk after