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Method
Rel. frost
Last spring frost (0°C) 17 May Frost 9 of 10 years · 20 years of data
Frost-free season 102 days 17 May – 27 Aug
Probability that frost is over

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

Herbs

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