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Rel. frost
Last spring frost (0°C) 6 May Frost 9 of 10 years · 20 years of data
Frost-free season 136 days 6 May – 19 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)
18 Mar – 1 Apr
20 Jun
5-7 wk
6 May
25 Jul
0 wk
30 Apr
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
2 Jul
4-6 wk
6 May
30 Jul
0 wk
30 Apr
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Mar – 1 Apr
15 Jun
5-7 wk
6 May
20 Jul
0 wk
23 Apr
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
18 – 25 Apr
3-4 wk
16 May
1 wk after
Florence Fennel
Foeniculum vulgare
7 – 14 May
21 May
4-5 wk
11 Jun
18 Jun
5 wk after
16 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
19 – 26 May
3-4 wk
16 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
2 Apr
8-12 wk
6 May
28 May
0 wk
19 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
30 Apr
17 Jun
1 wk before
30 Apr
7 Jun
1 wk before
Maize
Zea mays
Season too short
10 – 17 Apr
3-4 wk
8 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
24 Jun
3-4 wk
11 May
15 Jul
1 wk after
19 May
5 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
10 Jul
0 wk
23 Apr
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
15 Jun
5-7 wk
6 May
20 Jul
0 wk
23 Apr
10 Jul
2 wk before
Potato
Solanum tuberosum
30 Mar – 13 Apr
30 May
4-6 wk
11 May
27 Jun
1 wk after
11 May
17 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
25 Jun
5-7 wk
6 May
30 Jul
0 wk
30 Apr
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
18 – 25 Apr
12 May
3-4 wk
16 May
2 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
12 Jun
3-4 wk
11 May
3 Jul
1 wk after
19 May
23 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
27 Jun
4-6 wk
6 May
25 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
14 Jul
3-4 wk
6 May
4 Aug
0 wk
30 Apr
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
27 Jun
4-6 wk
6 May
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Mar – 9 Apr
5 Jun
2-4 wk
23 Apr
19 Jun
2 wk before
23 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Apr
17 Jun
1 wk before
30 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
8 – 15 Apr
29 Jul
3-4 wk
6 May
19 Aug
0 wk
16 Apr
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
13 – 27 Mar
6-8 wk
8 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
10 – 24 Apr
14 May
2-4 wk
8 May
28 May
0 wk
19 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
27 Jun
4-6 wk
6 May
25 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
29 Jun
3-4 wk
6 May
20 Jul
0 wk
30 Apr
10 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
4 – 18 Apr
20 Apr
4-6 wk
16 May
18 May
1 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
25 May
8-10 wk
6 May
20 Jul
0 wk
1 Jun
10 Jul
4 wk after
Dill
Anethum graveolens
30 Apr
15 Jul
1 wk before
Wild chives
Allium schoenoprasum
11 – 25 Mar
8 Jun
6-8 wk
6 May
20 Jul
0 wk
30 Apr
10 Jul
1 wk before
Spearmint
Mentha spicata
11 Feb – 11 Mar
25 May
8-12 wk
6 May
20 Jul
0 wk
1 Jun
10 Jul
4 wk after
Coriander
Coriandrum sativum
6 May
4 Aug
0 wk
19 May
25 Jul
2 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
10 May
8-10 wk
11 May
5 Jul
1 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
15 May
8-10 wk
6 May
10 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
29 May
6-8 wk
6 May
10 Jul
0 wk
1 Jun
30 Jun
4 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
29 May
6-8 wk
6 May
10 Jul
0 wk
30 Apr
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
25 Mar
10-14 wk
11 May
3 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
Greenhouse
18 – 25 Apr
27 Apr
3-4 wk
16 May
18 May
1 wk after
Cornflower
Centaurea cyanus
6 May
20 Jul
0 wk
30 Apr
10 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
7 – 21 Mar
22 Mar
8-10 wk
16 May
17 May
1 wk after
Sweet William
Dianthus barbatus
11 – 25 Mar
6-8 wk
6 May
0 wk
11 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
21 Mar – 4 Apr
5 Apr
6-8 wk
16 May
17 May
1 wk after
21 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
16 – 30 Mar
9 Apr
6-8 wk
11 May
21 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
6 Apr – 4 May
10 Apr
4-8 wk
1 Jun
4 wk after
1 Jun
4 wk after
Foxglove
Digitalis purpurea
25 Feb – 11 Mar
8-10 wk
6 May
0 wk
19 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
3 – 31 Mar
8 May
8-12 wk
26 May
3 Jul
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
21 Mar – 4 Apr
15 Apr
6-8 wk
16 May
27 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 Apr
4-6 wk
26 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
10 Apr
8-10 wk
11 May
5 Jun
1 wk after
Love in a mist
Nigella damascena
6 May
5 Jul
0 wk
30 Apr
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
13 – 27 Mar
31 Mar
6-8 wk
8 May
12 May
0 wk
8 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
10 Apr
8-12 wk
11 May
5 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
21 Feb – 21 Mar
26 Mar
8-12 wk
16 May
21 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
21 Feb – 21 Mar
13 Mar
8-12 wk
16 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
21 Mar – 4 Apr
27 Mar
6-8 wk
16 May
1 wk after
Corn poppy
Papaver rhoeas
6 May
20 Jul
0 wk
30 Apr
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
15 May
8-12 wk
6 May
10 Jul
0 wk
11 May
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
17 – 31 Mar
1 Apr
8-10 wk
26 May
27 May
3 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
5 Jun
5-8 wk
6 May
10 Jul
0 wk
Stock
Matthiola incana
11 – 25 Mar
8 Jun
6-8 wk
6 May
20 Jul
0 wk
19 May
10 Jul
2 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
9 May
6-8 wk
6 May
20 Jun
0 wk
19 May
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
4 – 18 Apr
5 Apr
4-6 wk
16 May
1 wk after
Garden pansy
Viola × wittrockiana
25 Feb – 11 Mar
25 May
8-10 wk
6 May
20 Jul
0 wk
11 May
10 Jul
1 wk after
Petunia
Petunia
Fleece
21 Feb – 21 Mar
22 Mar
8-12 wk
16 May
17 May
1 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
24 Apr
6-8 wk
11 May
5 Jun
1 wk after
16 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
4 – 18 Apr
20 Apr
4-6 wk
16 May
18 May
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
11 – 25 Apr
27 Apr
3-5 wk
16 May
18 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
4 – 18 Apr
23 Apr
4-6 wk
16 May
21 May
1 wk after
1 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
3 – 31 Mar
12 Apr
8-12 wk
26 May
7 Jun
3 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
25 Apr
8-12 wk
6 May
20 Jun
0 wk
1 Jun
10 Jun
4 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
9 Apr
6-8 wk
6 May
21 May
0 wk
19 May
2 wk after
Safflower
Carthamus tinctorius
6 May
20 Jun
0 wk
30 Apr
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
29 May
6-8 wk
6 May
10 Jul
0 wk
21 Mar
30 Jun
7 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
12 Jun
4-6 wk
6 May
10 Jul
0 wk
19 May
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
21 Feb – 7 Mar
10-12 wk
16 May
1 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
2 Jun
3-4 wk
26 May
23 Jun
3 wk after
1 Jun
13 Jun
4 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
22 May
6-8 wk
26 May
3 Jul
3 wk after
16 Jun
23 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
13 – 27 Mar
15 Apr
6-8 wk
8 May
27 May
0 wk
1 Jun
4 wk after
Hollyhock
Alcea rosea
11 – 25 Mar
6-8 wk
6 May
0 wk
19 May
2 wk after
Alpine delphinium
Delphinium elatum
11 Feb – 11 Mar
25 Apr
8-12 wk
6 May
20 Jun
0 wk
1 Jun
10 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
21 Mar – 4 Apr
15 Apr
6-8 wk
16 May
27 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
12 May
6-8 wk
11 May
23 Jun
1 wk after
16 Jun
6 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
15 Apr
8-10 wk
6 May
10 Jun
0 wk
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
7 Mar – 4 Apr
6 Apr
6-10 wk
16 May
18 May
1 wk after
California goldenpoppy
Eschscholzia californica
6 May
18 Jul
0 wk
30 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
23 Apr
8-10 wk
26 May
18 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Mar
9 May
6-8 wk
6 May
20 Jun
0 wk
19 May
10 Jun
2 wk after