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Rel. frost
Last spring frost (0°C) 7 May Frost 9 of 10 years · 20 years of data
Frost-free season 129 days 7 May – 13 Sep
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)
19 Mar – 2 Apr
16 Jun
5-7 wk
7 May
21 Jul
0 wk
30 Apr
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
28 Jun
4-6 wk
7 May
26 Jul
0 wk
30 Apr
16 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
11 Jun
5-7 wk
7 May
16 Jul
0 wk
25 Apr
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
16 May
4-5 wk
12 Jun
13 Jun
5 wk after
12 Jun
5 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
3 Mar
8-12 wk
7 May
0 wk
17 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
30 Apr
18 May
1 wk before
30 Apr
8 May
1 wk before
Maize
Zea mays
Season too short
11 – 18 Apr
3-4 wk
9 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Apr
24 Jun
3-4 wk
12 May
15 Jul
1 wk after
17 May
5 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
6 Jul
0 wk
25 Apr
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
11 Jun
5-7 wk
7 May
16 Jul
0 wk
25 Apr
6 Jul
2 wk before
Potato
Solanum tuberosum
31 Mar – 14 Apr
23 Apr
4-6 wk
12 May
21 May
1 wk after
12 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
21 Jun
5-7 wk
7 May
26 Jul
0 wk
30 Apr
16 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Apr
25 Apr
3-4 wk
12 May
16 May
1 wk after
17 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
23 Jun
4-6 wk
7 May
21 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
10 Jul
3-4 wk
7 May
31 Jul
0 wk
30 Apr
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
23 Jun
4-6 wk
7 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Mar – 11 Apr
7 May
2-4 wk
25 Apr
21 May
2 wk before
25 Apr
11 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Apr
18 May
1 wk before
30 Apr
8 May
1 wk before
Spinach
Spinacia oleracea
9 – 16 Apr
25 Jul
3-4 wk
7 May
15 Aug
0 wk
19 Apr
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
14 – 28 Mar
6-8 wk
9 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
11 – 25 Apr
2-4 wk
9 May
0 wk
17 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
23 Jun
4-6 wk
7 May
21 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
25 Jun
3-4 wk
7 May
16 Jul
0 wk
30 Apr
6 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
Season too short
5 – 19 Apr
4-6 wk
17 May
1 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
21 May
8-10 wk
7 May
16 Jul
0 wk
28 May
6 Jul
3 wk after
Dill
Anethum graveolens
30 Apr
15 Jul
1 wk before
Wild chives
Allium schoenoprasum
12 – 26 Mar
4 Jun
6-8 wk
7 May
16 Jul
0 wk
30 Apr
6 Jul
1 wk before
Spearmint
Mentha spicata
12 Feb – 12 Mar
21 May
8-12 wk
7 May
16 Jul
0 wk
28 May
6 Jul
3 wk after
Coriander
Coriandrum sativum
7 May
4 Aug
0 wk
17 May
25 Jul
1 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
6 May
8-10 wk
12 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
11 May
8-10 wk
7 May
6 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
25 May
6-8 wk
7 May
6 Jul
0 wk
28 May
26 Jun
3 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
25 May
6-8 wk
7 May
6 Jul
0 wk
30 Apr
26 Jun
1 wk before
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
24 Mar
10-14 wk
12 May
2 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
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Cornflower
Centaurea cyanus
7 May
16 Jul
0 wk
30 Apr
6 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
28 Feb – 14 Mar
29 Mar
8-10 wk
9 May
24 May
0 wk
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
Greenhouse
14 – 28 Mar
12 Apr
6-8 wk
9 May
24 May
0 wk
4 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
17 – 31 Mar
31 Mar
6-8 wk
12 May
12 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
11 Mar – 8 Apr
10 May
4-8 wk
6 May
7 Jun
0 wk
6 May
28 May
0 wk
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
17 May
1 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
22 Feb – 22 Mar
12 May
8-12 wk
17 May
7 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
22 Apr
6-8 wk
9 May
3 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
15 – 29 Apr
4-6 wk
27 May
3 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Mar
10 Apr
8-10 wk
12 May
5 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
1 Jul
0 wk
30 Apr
21 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
14 – 28 Mar
2 Apr
6-8 wk
9 May
14 May
0 wk
4 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
10 Apr
8-12 wk
12 May
5 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
14 Feb – 14 Mar
22 Mar
8-12 wk
9 May
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
1 wk after
Corn poppy
Papaver rhoeas
7 May
16 Jul
0 wk
30 Apr
6 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
11 May
8-12 wk
7 May
6 Jul
0 wk
12 May
26 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
8 Apr
8-10 wk
17 May
3 Jun
1 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
1 Jun
5-8 wk
7 May
6 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
4 Jun
6-8 wk
7 May
16 Jul
0 wk
17 May
6 Jul
1 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
5 May
6-8 wk
7 May
16 Jun
0 wk
17 May
6 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
1 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
21 May
8-10 wk
7 May
16 Jul
0 wk
12 May
6 Jul
1 wk after
Petunia
Petunia
Greenhouse
14 Feb – 14 Mar
29 Mar
8-12 wk
9 May
24 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
24 Apr
6-8 wk
12 May
5 Jun
1 wk after
12 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
28 Mar – 11 Apr
24 Apr
4-6 wk
9 May
22 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
12 – 26 Apr
3-5 wk
17 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
28 Mar – 11 Apr
10 May
4-6 wk
9 May
7 Jun
0 wk
17 May
28 May
1 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
4 Mar – 1 Apr
8-12 wk
27 May
3 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
21 Apr
8-12 wk
7 May
16 Jun
0 wk
28 May
6 Jun
3 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
5 Apr
6-8 wk
7 May
17 May
0 wk
17 May
1 wk after
Safflower
Carthamus tinctorius
7 May
16 Jun
0 wk
30 Apr
6 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
25 May
6-8 wk
7 May
6 Jul
0 wk
29 Mar
26 Jun
6 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
8 Jun
4-6 wk
7 May
6 Jul
0 wk
17 May
26 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
10-12 wk
17 May
1 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
1 Jun
3-4 wk
27 May
22 Jun
3 wk after
28 May
12 Jun
3 wk after
China aster
Callistephus chinensis
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
3 wk after
12 Jun
22 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
12 – 26 Mar
22 Apr
6-8 wk
7 May
3 Jun
0 wk
17 May
24 May
1 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
17 May
1 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
21 Apr
8-12 wk
7 May
16 Jun
0 wk
28 May
6 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
22 Apr
6-8 wk
9 May
3 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
11 May
6-8 wk
12 May
22 Jun
1 wk after
12 Jun
12 Jun
5 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
11 Apr
8-10 wk
7 May
6 Jun
0 wk
28 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
8 Mar – 5 Apr
6-10 wk
17 May
1 wk after
California goldenpoppy
Eschscholzia californica
7 May
10 Jul
0 wk
30 Apr
30 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
18 Apr
8-10 wk
27 May
13 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
5 May
6-8 wk
7 May
16 Jun
0 wk
17 May
6 Jun
1 wk after