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Rel. frost
Last spring frost (0°C) 4 May Frost 9 of 10 years · 20 years of data
Frost-free season 136 days 4 May – 17 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)
16 – 30 Mar
9 Jun
5-7 wk
4 May
14 Jul
0 wk
5 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
21 Jun
4-6 wk
4 May
19 Jul
0 wk
5 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Mar
4 Jun
5-7 wk
4 May
9 Jul
0 wk
4 May
29 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
21 – 28 Apr
30 May
4-5 wk
26 May
27 Jun
3 wk after
29 May
17 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
9 Feb – 9 Mar
5 Mar
8-12 wk
4 May
0 wk
10 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Greenhouse
25 Apr
30 May
1 wk before
25 Apr
20 May
1 wk before
Maize
Zea mays
Season too short
6 – 13 Apr
3-4 wk
4 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
26 Jun
3-4 wk
11 May
17 Jul
1 wk after
17 May
7 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
29 Jun
0 wk
4 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Mar
4 Jun
5-7 wk
4 May
9 Jul
0 wk
4 May
29 Jun
0 wk
Potato
Solanum tuberosum
Greenhouse
20 Mar – 3 Apr
12 May
4-6 wk
1 May
9 Jun
0 wk
1 May
30 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Mar
14 Jun
5-7 wk
4 May
19 Jul
0 wk
5 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
19 – 26 Apr
3-4 wk
17 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
6 – 13 Apr
29 Apr
3-4 wk
4 May
20 May
0 wk
10 May
10 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
16 Jun
4-6 wk
4 May
14 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Apr
3 Jul
3-4 wk
4 May
24 Jul
0 wk
5 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
16 Jun
4-6 wk
4 May
14 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
21 Mar – 4 Apr
22 May
2-4 wk
18 Apr
5 Jun
2 wk before
18 Apr
26 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Greenhouse
25 Apr
30 May
1 wk before
25 Apr
20 May
1 wk before
Spinach
Spinacia oleracea
6 – 13 Apr
18 Jul
3-4 wk
4 May
8 Aug
0 wk
1 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
29 May – 12 Jun
4-6 wk
10 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
9 – 23 Mar
6-8 wk
4 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
6 – 20 Apr
12 Apr
2-4 wk
4 May
0 wk
17 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
16 Jun
4-6 wk
4 May
14 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Apr
18 Jun
3-4 wk
4 May
9 Jul
0 wk
5 May
29 Jun
0 wk

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
2 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
14 May
8-10 wk
4 May
9 Jul
0 wk
29 May
29 Jun
4 wk after
Dill
Anethum graveolens
5 May
17 Jul
0 wk
Wild chives
Allium schoenoprasum
9 – 23 Mar
28 May
6-8 wk
4 May
9 Jul
0 wk
5 May
29 Jun
0 wk
Spearmint
Mentha spicata
9 Feb – 9 Mar
14 May
8-12 wk
4 May
9 Jul
0 wk
29 May
29 Jun
4 wk after
Coriander
Coriandrum sativum
4 May
6 Aug
0 wk
17 May
27 Jul
2 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
29 Apr
8-10 wk
11 May
24 Jun
1 wk after
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
4 May
8-10 wk
4 May
29 Jun
0 wk
Oregano
Origanum vulgare
9 – 23 Mar
18 May
6-8 wk
4 May
29 Jun
0 wk
29 May
19 Jun
4 wk after
Parsley
Petroselinum crispum
9 – 23 Mar
18 May
6-8 wk
4 May
29 Jun
0 wk
5 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
29 Mar
10-14 wk
11 May
7 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
2 wk after
Cornflower
Centaurea cyanus
4 May
9 Jul
0 wk
5 May
29 Jun
0 wk
Statice
Limonium sinuatum
Greenhouse
23 Feb – 9 Mar
7 Apr
8-10 wk
4 May
2 Jun
0 wk
Sweet William
Dianthus barbatus
9 – 23 Mar
6-8 wk
4 May
0 wk
14 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
9 – 23 Mar
21 Apr
6-8 wk
4 May
2 Jun
0 wk
5 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
16 – 30 Mar
10 Apr
6-8 wk
11 May
22 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
15 Mar – 12 Apr
14 May
4-8 wk
10 May
11 Jun
1 wk after
10 May
1 Jun
1 wk after
Foxglove
Digitalis purpurea
23 Feb – 9 Mar
8-10 wk
4 May
0 wk
17 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
22 Feb – 22 Mar
22 May
8-12 wk
17 May
17 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
22 Mar – 5 Apr
14 Apr
6-8 wk
17 May
26 May
2 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
12 Apr
8-10 wk
11 May
7 Jun
1 wk after
Love in a mist
Nigella damascena
4 May
24 Jun
0 wk
5 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
9 – 23 Mar
11 Apr
6-8 wk
4 May
23 May
0 wk
5 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
12 Apr
8-12 wk
11 May
7 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
9 Feb – 9 Mar
15 Mar
8-12 wk
4 May
10 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
2 wk after
Corn poppy
Papaver rhoeas
4 May
9 Jul
0 wk
5 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
4 May
8-12 wk
4 May
29 Jun
0 wk
14 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
17 Apr
8-10 wk
17 May
12 Jun
2 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Mar
25 May
5-8 wk
4 May
29 Jun
0 wk
Stock
Matthiola incana
9 – 23 Mar
28 May
6-8 wk
4 May
9 Jul
0 wk
17 May
29 Jun
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Mar
28 Apr
6-8 wk
4 May
9 Jun
0 wk
17 May
30 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
2 wk after
Garden pansy
Viola × wittrockiana
23 Feb – 9 Mar
14 May
8-10 wk
4 May
9 Jul
0 wk
14 May
29 Jun
1 wk after
Petunia
Petunia
Greenhouse
9 Feb – 9 Mar
7 Apr
8-12 wk
4 May
2 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
26 Apr
6-8 wk
11 May
7 Jun
1 wk after
16 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
23 Mar – 6 Apr
4 May
4-6 wk
4 May
1 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
12 – 26 Apr
3-5 wk
17 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
23 Mar – 6 Apr
14 May
4-6 wk
4 May
11 Jun
0 wk
17 May
1 Jun
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
3 – 31 Mar
11 Mar
8-12 wk
26 May
3 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
14 Apr
8-12 wk
4 May
9 Jun
0 wk
29 May
30 May
4 wk after
Yarrow
Achillea millefolium
9 – 23 Mar
29 Mar
6-8 wk
4 May
10 May
0 wk
17 May
2 wk after
Safflower
Carthamus tinctorius
4 May
9 Jun
0 wk
5 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Mar
18 May
6-8 wk
4 May
29 Jun
0 wk
18 Apr
19 Jun
2 wk before
Bishop's flower
Ammi majus
23 Mar – 6 Apr
1 Jun
4-6 wk
4 May
29 Jun
0 wk
17 May
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
10-12 wk
17 May
2 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
6 Jun
3-4 wk
26 May
27 Jun
3 wk after
29 May
17 Jun
4 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
26 May
6-8 wk
26 May
7 Jul
3 wk after
16 Jun
27 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
9 – 23 Mar
14 Apr
6-8 wk
4 May
26 May
0 wk
29 May
4 wk after
Hollyhock
Alcea rosea
9 – 23 Mar
6-8 wk
4 May
0 wk
17 May
2 wk after
Alpine delphinium
Delphinium elatum
9 Feb – 9 Mar
14 Apr
8-12 wk
4 May
9 Jun
0 wk
29 May
30 May
4 wk after
African marigold
Tagetes erecta
Fleece
22 Mar – 5 Apr
14 Apr
6-8 wk
17 May
26 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
16 May
6-8 wk
11 May
27 Jun
1 wk after
16 Jun
17 Jun
6 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
4 Apr
8-10 wk
4 May
30 May
0 wk
29 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
8 Mar – 5 Apr
6-10 wk
17 May
2 wk after
California goldenpoppy
Eschscholzia californica
4 May
9 Jul
0 wk
5 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
1 May
8-10 wk
26 May
26 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Mar
28 Apr
6-8 wk
4 May
9 Jun
0 wk
17 May
30 May
2 wk after