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Method
Rel. frost
Last spring frost (0°C) 24 May Frost 1 of 10 years · 20 years of data
Frost-free season 136 days 24 May – 7 Oct
Probability that frost is over

90% = 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)
5 – 19 Apr
17 Jun
5-7 wk
24 May
22 Jul
0 wk
17 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Apr
29 Jun
4-6 wk
24 May
27 Jul
0 wk
17 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
7 Mar – 4 Apr
8-12 wk
30 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Apr
12 Jun
5-7 wk
24 May
17 Jul
0 wk
12 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
2 – 9 May
3-4 wk
30 May
1 wk after
Florence Fennel
Foeniculum vulgare
21 – 28 May
9 Jun
4-5 wk
25 Jun
7 Jul
5 wk after
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 Jun
3-4 wk
2 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
1 – 29 Mar
2 Apr
8-12 wk
24 May
28 May
0 wk
3 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
17 Jun
1 wk before
17 May
7 Jun
1 wk before
Maize
Zea mays
Season too short
26 Apr – 3 May
3-4 wk
24 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Apr – 5 May
6 Jul
3-4 wk
26 May
27 Jul
0 wk
3 Jun
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 May
7 Jul
0 wk
12 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Apr
12 Jun
5-7 wk
24 May
17 Jul
0 wk
12 May
7 Jul
2 wk before
Potato
Solanum tuberosum
17 Apr – 1 May
9 Jun
4-6 wk
29 May
7 Jul
1 wk after
29 May
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Apr
22 Jun
5-7 wk
24 May
27 Jul
0 wk
17 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
9 – 16 May
3-4 wk
6 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Apr – 5 May
25 Jun
3-4 wk
26 May
16 Jul
0 wk
3 Jun
6 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Apr
24 Jun
4-6 wk
24 May
22 Jul
0 wk
Lettuce
Lactuca sativa
26 Apr – 3 May
11 Jul
3-4 wk
24 May
1 Aug
0 wk
17 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Apr
24 Jun
4-6 wk
24 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
3 Jun
2-4 wk
12 May
17 Jun
2 wk before
12 May
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
17 Jun
1 wk before
17 May
7 Jun
1 wk before
Spinach
Spinacia oleracea
26 Apr – 3 May
26 Jul
3-4 wk
24 May
16 Aug
0 wk
6 May
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
2 – 16 May
5 May
2-4 wk
30 May
1 wk after
14 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Apr
24 Jun
4-6 wk
24 May
22 Jul
0 wk
Garden pea
Pisum sativum
26 Apr – 3 May
26 Jun
3-4 wk
24 May
17 Jul
0 wk
17 May
7 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
Greenhouse
18 Apr – 2 May
4 May
4-6 wk
30 May
1 Jun
1 wk after
Lemon balm
Melissa officinalis
15 – 29 Mar
22 May
8-10 wk
24 May
17 Jul
0 wk
14 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
17 May
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
29 Mar – 12 Apr
5 Jun
6-8 wk
24 May
17 Jul
0 wk
17 May
7 Jul
1 wk before
Spearmint
Mentha spicata
1 – 29 Mar
22 May
8-12 wk
24 May
17 Jul
0 wk
14 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
24 May
16 Aug
0 wk
3 Jun
6 Aug
1 wk after
Garden sage
Salvia officinalis
17 – 31 Mar
7 May
8-10 wk
26 May
2 Jul
0 wk
Common thyme
Thymus vulgaris
15 – 29 Mar
12 May
8-10 wk
24 May
7 Jul
0 wk
Oregano
Origanum vulgare
29 Mar – 12 Apr
26 May
6-8 wk
24 May
7 Jul
0 wk
14 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
29 Mar – 12 Apr
26 May
6-8 wk
24 May
7 Jul
0 wk
17 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
17 Feb – 17 Mar
8 Apr
10-14 wk
26 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
Greenhouse
2 – 9 May
11 May
3-4 wk
30 May
1 Jun
1 wk after
Cornflower
Centaurea cyanus
24 May
17 Jul
0 wk
17 May
7 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
21 Mar – 4 Apr
13 Apr
8-10 wk
30 May
8 Jun
1 wk after
Sweet William
Dianthus barbatus
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
29 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
4 – 18 Apr
27 Apr
6-8 wk
30 May
8 Jun
1 wk after
9 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 Apr
10 Apr
6-8 wk
4 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
8 Apr – 6 May
22 May
4-8 wk
3 Jun
19 Jun
1 wk after
3 Jun
9 Jun
1 wk after
Foxglove
Digitalis purpurea
15 – 29 Mar
8-10 wk
24 May
0 wk
3 Jun
1 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Apr
29 Apr
8-12 wk
25 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
11 – 25 Apr
18 Apr
6-8 wk
6 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
25 Apr – 9 May
4-6 wk
6 Jun
2 wk after
Chinese lantern
Physalis alkekengi
17 – 31 Mar
22 Apr
8-10 wk
26 May
17 Jun
0 wk
Love in a mist
Nigella damascena
24 May
2 Jul
0 wk
17 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
4 – 18 Apr
17 Apr
6-8 wk
30 May
1 wk after
9 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
3 – 31 Mar
22 Apr
8-12 wk
26 May
17 Jun
0 wk
Cardoon
Cynara cardunculus
14 Mar – 11 Apr
23 Mar
8-12 wk
6 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
7 Mar – 4 Apr
27 Mar
8-12 wk
30 May
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
4 – 18 Apr
10 Apr
6-8 wk
30 May
1 wk after
Corn poppy
Papaver rhoeas
24 May
17 Jul
0 wk
17 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Mar
12 May
8-12 wk
24 May
7 Jul
0 wk
29 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
28 Mar – 11 Apr
23 Apr
8-10 wk
6 Jun
18 Jun
2 wk after
Sweet pea
Lathyrus odoratus
29 Mar – 19 Apr
2 Jun
5-8 wk
24 May
7 Jul
0 wk
Stock
Matthiola incana
29 Mar – 12 Apr
5 Jun
6-8 wk
24 May
17 Jul
0 wk
3 Jun
7 Jul
1 wk after
Wormwood
Artemisia absinthium
29 Mar – 12 Apr
6 May
6-8 wk
24 May
17 Jun
0 wk
3 Jun
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
18 Apr – 2 May
19 Apr
4-6 wk
30 May
1 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Mar
22 May
8-10 wk
24 May
17 Jul
0 wk
29 May
7 Jul
1 wk after
Petunia
Petunia
Fleece
7 Mar – 4 Apr
13 Apr
8-12 wk
30 May
8 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
31 Mar – 14 Apr
6 May
6-8 wk
26 May
17 Jun
0 wk
29 Jun
5 wk after
Common zinnia
Zinnia elegans
Fleece
18 Apr – 2 May
4 May
4-6 wk
30 May
1 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
25 Apr – 9 May
11 May
3-5 wk
30 May
1 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
18 Apr – 2 May
22 May
4-6 wk
30 May
19 Jun
1 wk after
14 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
14 Mar – 11 Apr
26 Apr
8-12 wk
6 Jun
21 Jun
2 wk after
Bee balm
Monarda didyma
1 – 29 Mar
22 Apr
8-12 wk
24 May
17 Jun
0 wk
14 Jun
3 wk after
Yarrow
Achillea millefolium
29 Mar – 12 Apr
6 Apr
6-8 wk
24 May
0 wk
3 Jun
1 wk after
Safflower
Carthamus tinctorius
24 May
17 Jun
0 wk
17 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
29 Mar – 12 Apr
26 May
6-8 wk
24 May
7 Jul
0 wk
15 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
12 – 26 Apr
9 Jun
4-6 wk
24 May
7 Jul
0 wk
3 Jun
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
7 – 21 Mar
21 Mar
10-12 wk
30 May
30 May
1 wk after
Sunflower
Helianthus annuus
9 – 16 May
16 Jun
3-4 wk
6 Jun
7 Jul
2 wk after
14 Jun
27 Jun
3 wk after
China aster
Callistephus chinensis
11 – 25 Apr
5 Jun
6-8 wk
6 Jun
17 Jul
2 wk after
29 Jun
7 Jul
5 wk after
Annual phlox
Phlox drummondii
4 – 18 Apr
18 Apr
6-8 wk
30 May
30 May
1 wk after
29 Jun
5 wk after
Hollyhock
Alcea rosea
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
3 Jun
1 wk after
Alpine delphinium
Delphinium elatum
1 – 29 Mar
22 Apr
8-12 wk
24 May
17 Jun
0 wk
14 Jun
3 wk after
African marigold
Tagetes erecta
11 – 25 Apr
18 Apr
6-8 wk
6 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
31 Mar – 14 Apr
26 May
6-8 wk
26 May
7 Jul
0 wk
29 Jun
5 wk after
Wood sage
Salvia nemorosa
15 – 29 Mar
12 Apr
8-10 wk
24 May
7 Jun
0 wk
14 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
21 Mar – 18 Apr
20 Apr
6-10 wk
30 May
1 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
24 May
17 Jul
0 wk
17 May
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
28 Mar – 11 Apr
12 May
8-10 wk
6 Jun
7 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
29 Mar – 12 Apr
6 May
6-8 wk
24 May
17 Jun
0 wk
3 Jun
7 Jun
1 wk after