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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 130 days 7 May – 14 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
17 Jun
5-7 wk
7 May
22 Jul
0 wk
30 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
29 Jun
4-6 wk
7 May
27 Jul
0 wk
30 Apr
17 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
12 Jun
5-7 wk
7 May
17 Jul
0 wk
25 Apr
7 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
18 Mar
8-12 wk
7 May
13 May
0 wk
17 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
30 Apr
2 Jun
1 wk before
30 Apr
23 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
22 Jun
3-4 wk
12 May
13 Jul
1 wk after
17 May
3 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
7 Jul
0 wk
25 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
12 Jun
5-7 wk
7 May
17 Jul
0 wk
25 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
31 Mar – 14 Apr
17 May
4-6 wk
12 May
14 Jun
1 wk after
12 May
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
22 Jun
5-7 wk
7 May
27 Jul
0 wk
30 Apr
17 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
22 May
3-4 wk
12 May
12 Jun
1 wk after
17 May
2 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
24 Jun
4-6 wk
7 May
22 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
11 Jul
3-4 wk
7 May
1 Aug
0 wk
30 Apr
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
24 Jun
4-6 wk
7 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Mar – 11 Apr
22 May
2-4 wk
25 Apr
5 Jun
2 wk before
25 Apr
26 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Apr
2 Jun
1 wk before
30 Apr
23 May
1 wk before
Spinach
Spinacia oleracea
9 – 16 Apr
26 Jul
3-4 wk
7 May
16 Aug
0 wk
19 Apr
6 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
24 Jun
4-6 wk
7 May
22 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
26 Jun
3-4 wk
7 May
17 Jul
0 wk
30 Apr
7 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
22 May
8-10 wk
7 May
17 Jul
0 wk
28 May
7 Jul
3 wk after
Dill
Anethum graveolens
30 Apr
13 Jul
1 wk before
Wild chives
Allium schoenoprasum
12 – 26 Mar
5 Jun
6-8 wk
7 May
17 Jul
0 wk
30 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
12 Feb – 12 Mar
22 May
8-12 wk
7 May
17 Jul
0 wk
28 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
7 May
2 Aug
0 wk
17 May
23 Jul
1 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
7 May
8-10 wk
12 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
12 May
8-10 wk
7 May
7 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
26 May
6-8 wk
7 May
7 Jul
0 wk
28 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
26 May
6-8 wk
7 May
7 Jul
0 wk
30 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
21 Mar
10-14 wk
12 May
30 May
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
17 Jul
0 wk
30 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
28 Feb – 14 Mar
30 Mar
8-10 wk
9 May
25 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
13 Apr
6-8 wk
9 May
25 May
0 wk
4 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
17 – 31 Mar
10 Apr
6-8 wk
12 May
22 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
22 Mar – 19 Apr
24 Apr
4-8 wk
17 May
22 May
1 wk after
17 May
1 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
17 May
1 wk after
Busy lizzie
Impatiens walleriana
Fleece
4 Mar – 1 Apr
29 Mar
8-12 wk
27 May
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
23 Apr
6-8 wk
9 May
4 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
8 Apr
8-10 wk
12 May
3 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
2 Jul
0 wk
30 Apr
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
14 – 28 Mar
3 Apr
6-8 wk
9 May
15 May
0 wk
4 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
8 Apr
8-12 wk
12 May
3 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
22 Feb – 22 Mar
23 Mar
8-12 wk
17 May
18 May
1 wk after
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
17 Jul
0 wk
30 Apr
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
12 May
8-12 wk
7 May
7 Jul
0 wk
12 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
9 Apr
8-10 wk
17 May
4 Jun
1 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
2 Jun
5-8 wk
7 May
7 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
5 Jun
6-8 wk
7 May
17 Jul
0 wk
17 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
6 May
6-8 wk
7 May
17 Jun
0 wk
17 May
7 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
22 May
8-10 wk
7 May
17 Jul
0 wk
12 May
7 Jul
1 wk after
Petunia
Petunia
Greenhouse
14 Feb – 14 Mar
30 Mar
8-12 wk
9 May
25 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
22 Apr
6-8 wk
12 May
3 Jun
1 wk after
12 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
28 Mar – 11 Apr
4 May
4-6 wk
9 May
1 Jun
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
Fleece
5 – 19 Apr
24 Apr
4-6 wk
17 May
22 May
1 wk after
28 May
3 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
22 Apr
8-12 wk
7 May
17 Jun
0 wk
28 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
6 Apr
6-8 wk
7 May
18 May
0 wk
17 May
1 wk after
Safflower
Carthamus tinctorius
7 May
17 Jun
0 wk
30 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
26 May
6-8 wk
7 May
7 Jul
0 wk
29 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
9 Jun
4-6 wk
7 May
7 Jul
0 wk
17 May
27 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
29 May
3-4 wk
27 May
19 Jun
3 wk after
28 May
9 Jun
3 wk after
China aster
Callistephus chinensis
1 – 15 Apr
18 May
6-8 wk
27 May
29 Jun
3 wk after
12 Jun
19 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
12 – 26 Mar
23 Apr
6-8 wk
7 May
4 Jun
0 wk
17 May
25 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
22 Apr
8-12 wk
7 May
17 Jun
0 wk
28 May
7 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
23 Apr
6-8 wk
9 May
4 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
8 May
6-8 wk
12 May
19 Jun
1 wk after
12 Jun
5 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
12 Apr
8-10 wk
7 May
7 Jun
0 wk
28 May
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
9 Jul
0 wk
30 Apr
29 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
6 May
6-8 wk
7 May
17 Jun
0 wk
17 May
7 Jun
1 wk after