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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 3 of 4 years · 20 years of data
Frost-free season 137 days 7 May – 21 Sep
Probability that frost is over

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