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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 133 days 6 May – 16 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
9 Jun
5-7 wk
6 May
14 Jul
0 wk
7 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
21 Jun
4-6 wk
6 May
19 Jul
0 wk
7 May
9 Jul
0 wk
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
4 Jun
5-7 wk
6 May
9 Jul
0 wk
6 May
29 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
18 – 25 Apr
3-4 wk
16 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
21 – 28 Apr
30 May
4-5 wk
26 May
27 Jun
3 wk after
31 May
17 Jun
4 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)
Fleece
11 Feb – 11 Mar
5 Mar
8-12 wk
6 May
0 wk
12 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Greenhouse
27 Apr
30 May
1 wk before
27 Apr
20 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
26 Jun
3-4 wk
11 May
17 Jul
1 wk after
19 May
7 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
29 Jun
0 wk
6 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
4 Jun
5-7 wk
6 May
9 Jul
0 wk
6 May
29 Jun
0 wk
Potato
Solanum tuberosum
Greenhouse
22 Mar – 5 Apr
12 May
4-6 wk
3 May
9 Jun
0 wk
3 May
30 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
14 Jun
5-7 wk
6 May
19 Jul
0 wk
7 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
18 – 25 Apr
3-4 wk
16 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
8 – 15 Apr
29 Apr
3-4 wk
6 May
20 May
0 wk
12 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
16 Jun
4-6 wk
6 May
14 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
3 Jul
3-4 wk
6 May
24 Jul
0 wk
7 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
16 Jun
4-6 wk
6 May
14 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
23 Mar – 6 Apr
22 May
2-4 wk
20 Apr
5 Jun
2 wk before
20 Apr
26 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Greenhouse
27 Apr
30 May
1 wk before
27 Apr
20 May
1 wk before
Spinach
Spinacia oleracea
8 – 15 Apr
18 Jul
3-4 wk
6 May
8 Aug
0 wk
3 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
31 May – 14 Jun
4-6 wk
12 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
19 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
16 Jun
4-6 wk
6 May
14 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
18 Jun
3-4 wk
6 May
9 Jul
0 wk
7 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
4 – 18 Apr
4-6 wk
16 May
1 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
14 May
8-10 wk
6 May
9 Jul
0 wk
31 May
29 Jun
4 wk after
Dill
Anethum graveolens
7 May
17 Jul
0 wk
Wild chives
Allium schoenoprasum
11 – 25 Mar
28 May
6-8 wk
6 May
9 Jul
0 wk
7 May
29 Jun
0 wk
Spearmint
Mentha spicata
11 Feb – 11 Mar
14 May
8-12 wk
6 May
9 Jul
0 wk
31 May
29 Jun
4 wk after
Coriander
Coriandrum sativum
6 May
6 Aug
0 wk
19 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
25 Feb – 11 Mar
4 May
8-10 wk
6 May
29 Jun
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
18 May
6-8 wk
6 May
29 Jun
0 wk
31 May
19 Jun
4 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
18 May
6-8 wk
6 May
29 Jun
0 wk
7 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
18 – 25 Apr
3-4 wk
16 May
1 wk after
Cornflower
Centaurea cyanus
6 May
9 Jul
0 wk
7 May
29 Jun
0 wk
Statice
Limonium sinuatum
Greenhouse
27 Feb – 13 Mar
1 Apr
8-10 wk
8 May
27 May
0 wk
Sweet William
Dianthus barbatus
11 – 25 Mar
6-8 wk
6 May
0 wk
16 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
13 – 27 Mar
15 Apr
6-8 wk
8 May
27 May
0 wk
7 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
11 – 25 Mar
29 Apr
6-8 wk
6 May
10 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
17 Mar – 14 Apr
13 May
4-8 wk
12 May
10 Jun
1 wk after
12 May
31 May
1 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
Greenhouse
21 Feb – 21 Mar
17 May
8-12 wk
16 May
12 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
13 – 27 Mar
25 Apr
6-8 wk
8 May
6 Jun
0 wk
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
6 May
24 Jun
0 wk
7 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
13 – 27 Mar
5 Apr
6-8 wk
8 May
17 May
0 wk
7 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
13 Feb – 13 Mar
15 Mar
8-12 wk
8 May
10 May
0 wk
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
9 Jul
0 wk
7 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
4 May
8-12 wk
6 May
29 Jun
0 wk
16 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
7 – 21 Mar
11 Apr
8-10 wk
16 May
6 Jun
1 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
25 May
5-8 wk
6 May
29 Jun
0 wk
Stock
Matthiola incana
11 – 25 Mar
28 May
6-8 wk
6 May
9 Jul
0 wk
19 May
29 Jun
2 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
28 Apr
6-8 wk
6 May
9 Jun
0 wk
19 May
30 May
2 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
14 May
8-10 wk
6 May
9 Jul
0 wk
16 May
29 Jun
1 wk after
Petunia
Petunia
Greenhouse
13 Feb – 13 Mar
1 Apr
8-12 wk
8 May
27 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
26 Apr
6-8 wk
11 May
7 Jun
1 wk after
18 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
27 Mar – 10 Apr
29 Apr
4-6 wk
8 May
27 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
Greenhouse
27 Mar – 10 Apr
13 May
4-6 wk
8 May
10 Jun
0 wk
19 May
31 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
3 – 31 Mar
8-12 wk
26 May
3 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
14 Apr
8-12 wk
6 May
9 Jun
0 wk
31 May
4 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
29 Mar
6-8 wk
6 May
10 May
0 wk
19 May
2 wk after
Safflower
Carthamus tinctorius
6 May
9 Jun
0 wk
7 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
18 May
6-8 wk
6 May
29 Jun
0 wk
20 Apr
19 Jun
2 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
1 Jun
4-6 wk
6 May
29 Jun
0 wk
19 May
19 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
6 Jun
3-4 wk
26 May
27 Jun
3 wk after
31 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
18 Jun
27 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
11 – 25 Mar
25 Apr
6-8 wk
6 May
6 Jun
0 wk
19 May
27 May
2 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
14 Apr
8-12 wk
6 May
9 Jun
0 wk
31 May
4 wk after
African marigold
Tagetes erecta
Greenhouse
13 – 27 Mar
25 Apr
6-8 wk
8 May
6 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
16 May
6-8 wk
11 May
27 Jun
1 wk after
18 Jun
6 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
4 Apr
8-10 wk
6 May
30 May
0 wk
31 May
4 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
9 Jul
0 wk
7 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
7 – 21 Mar
2 May
8-10 wk
16 May
27 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Mar
28 Apr
6-8 wk
6 May
9 Jun
0 wk
19 May
30 May
2 wk after