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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
16 Jun
5-7 wk
6 May
21 Jul
0 wk
29 Apr
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
28 Jun
4-6 wk
6 May
26 Jul
0 wk
29 Apr
16 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
11 Jun
5-7 wk
6 May
16 Jul
0 wk
24 Apr
6 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
11 Jun
5 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
21 Mar
8-12 wk
6 May
16 May
0 wk
16 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Apr
5 Jun
1 wk before
29 Apr
26 May
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
23 Jun
3-4 wk
11 May
14 Jul
1 wk after
16 May
4 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
6 Jul
0 wk
24 Apr
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
11 Jun
5-7 wk
6 May
16 Jul
0 wk
24 Apr
6 Jul
2 wk before
Potato
Solanum tuberosum
30 Mar – 13 Apr
20 May
4-6 wk
11 May
17 Jun
1 wk after
11 May
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
21 Jun
5-7 wk
6 May
26 Jul
0 wk
29 Apr
16 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
18 – 25 Apr
3-4 wk
16 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
26 May
3-4 wk
11 May
16 Jun
1 wk after
16 May
6 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
23 Jun
4-6 wk
6 May
21 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
10 Jul
3-4 wk
6 May
31 Jul
0 wk
29 Apr
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
23 Jun
4-6 wk
6 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Mar – 10 Apr
25 May
2-4 wk
24 Apr
8 Jun
2 wk before
24 Apr
29 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Apr
5 Jun
1 wk before
29 Apr
26 May
1 wk before
Spinach
Spinacia oleracea
8 – 15 Apr
25 Jul
3-4 wk
6 May
15 Aug
0 wk
18 Apr
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
10 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
Season too short
10 – 24 Apr
2-4 wk
8 May
0 wk
16 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
23 Jun
4-6 wk
6 May
21 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
25 Jun
3-4 wk
6 May
16 Jul
0 wk
29 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
4 – 18 Apr
4-6 wk
16 May
1 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
21 May
8-10 wk
6 May
16 Jul
0 wk
27 May
6 Jul
3 wk after
Dill
Anethum graveolens
29 Apr
14 Jul
1 wk before
Wild chives
Allium schoenoprasum
11 – 25 Mar
4 Jun
6-8 wk
6 May
16 Jul
0 wk
29 Apr
6 Jul
1 wk before
Spearmint
Mentha spicata
11 Feb – 11 Mar
21 May
8-12 wk
6 May
16 Jul
0 wk
27 May
6 Jul
3 wk after
Coriander
Coriandrum sativum
6 May
3 Aug
0 wk
16 May
24 Jul
1 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
6 May
8-10 wk
11 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
11 May
8-10 wk
6 May
6 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
25 May
6-8 wk
6 May
6 Jul
0 wk
27 May
26 Jun
3 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
25 May
6-8 wk
6 May
6 Jul
0 wk
29 Apr
26 Jun
1 wk before
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
24 Mar
10-14 wk
11 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
18 – 25 Apr
3-4 wk
16 May
1 wk after
Cornflower
Centaurea cyanus
6 May
16 Jul
0 wk
29 Apr
6 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
27 Feb – 13 Mar
28 Mar
8-10 wk
8 May
23 May
0 wk
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
Greenhouse
13 – 27 Mar
11 Apr
6-8 wk
8 May
23 May
0 wk
3 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
16 – 30 Mar
6 Apr
6-8 wk
11 May
18 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
21 Mar – 18 Apr
20 Apr
4-8 wk
16 May
18 May
1 wk after
16 May
1 wk after
Foxglove
Digitalis purpurea
25 Feb – 11 Mar
8-10 wk
6 May
0 wk
16 May
1 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
21 Feb – 21 Mar
18 May
8-12 wk
16 May
13 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
21 Mar – 4 Apr
30 Mar
6-8 wk
16 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
9 Apr
8-10 wk
11 May
4 Jun
1 wk after
Love in a mist
Nigella damascena
6 May
1 Jul
0 wk
29 Apr
21 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
13 – 27 Mar
1 Apr
6-8 wk
8 May
13 May
0 wk
3 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
9 Apr
8-12 wk
11 May
4 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
21 Feb – 21 Mar
22 Mar
8-12 wk
16 May
17 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
1 wk after
Corn poppy
Papaver rhoeas
6 May
16 Jul
0 wk
29 Apr
6 Jul
1 wk before
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
11 May
8-12 wk
6 May
6 Jul
0 wk
11 May
26 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
7 – 21 Mar
7 Apr
8-10 wk
16 May
2 Jun
1 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
1 Jun
5-8 wk
6 May
6 Jul
0 wk
Stock
Matthiola incana
11 – 25 Mar
4 Jun
6-8 wk
6 May
16 Jul
0 wk
16 May
6 Jul
1 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
5 May
6-8 wk
6 May
16 Jun
0 wk
16 May
6 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
4 – 18 Apr
4-6 wk
16 May
1 wk after
Garden pansy
Viola × wittrockiana
25 Feb – 11 Mar
21 May
8-10 wk
6 May
16 Jul
0 wk
11 May
6 Jul
1 wk after
Petunia
Petunia
Greenhouse
13 Feb – 13 Mar
28 Mar
8-12 wk
8 May
23 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
23 Apr
6-8 wk
11 May
4 Jun
1 wk after
11 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
27 Mar – 10 Apr
30 Apr
4-6 wk
8 May
28 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
11 – 25 Apr
3-5 wk
16 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
4 – 18 Apr
20 Apr
4-6 wk
16 May
18 May
1 wk after
27 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
3 – 31 Mar
5 Mar
8-12 wk
26 May
3 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
21 Apr
8-12 wk
6 May
16 Jun
0 wk
27 May
6 Jun
3 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
5 Apr
6-8 wk
6 May
17 May
0 wk
16 May
1 wk after
Safflower
Carthamus tinctorius
6 May
16 Jun
0 wk
29 Apr
6 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
25 May
6-8 wk
6 May
6 Jul
0 wk
28 Mar
26 Jun
6 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
8 Jun
4-6 wk
6 May
6 Jul
0 wk
16 May
26 Jun
1 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
1 Jun
3-4 wk
26 May
22 Jun
3 wk after
27 May
12 Jun
3 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
21 May
6-8 wk
26 May
2 Jul
3 wk after
11 Jun
22 Jun
5 wk after
Annual phlox
Phlox drummondii
Fleece
13 – 27 Mar
30 Mar
6-8 wk
8 May
11 May
0 wk
27 May
3 wk after
Hollyhock
Alcea rosea
11 – 25 Mar
6-8 wk
6 May
0 wk
16 May
1 wk after
Alpine delphinium
Delphinium elatum
11 Feb – 11 Mar
21 Apr
8-12 wk
6 May
16 Jun
0 wk
27 May
6 Jun
3 wk after
African marigold
Tagetes erecta
Fleece
21 Mar – 4 Apr
30 Mar
6-8 wk
16 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
11 May
6-8 wk
11 May
22 Jun
1 wk after
11 Jun
12 Jun
5 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
11 Apr
8-10 wk
6 May
6 Jun
0 wk
27 May
27 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
7 Mar – 4 Apr
6-10 wk
16 May
1 wk after
California goldenpoppy
Eschscholzia californica
6 May
14 Jul
0 wk
29 Apr
4 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
5 May
6-8 wk
6 May
16 Jun
0 wk
16 May
6 Jun
1 wk after