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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 3 of 4 years · 20 years of data
Frost-free season 137 days 7 May – 21 Sep
Probability that frost is over

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