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Method
Rel. frost
Last spring frost (0°C) 9 May Frost 3 of 4 years · 20 years of data
Frost-free season 133 days 9 May – 19 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)
21 Mar – 4 Apr
16 Jun
5-7 wk
9 May
21 Jul
0 wk
13 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
28 Jun
4-6 wk
9 May
26 Jul
0 wk
13 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
1 – 29 Mar
14 Apr
8-12 wk
24 May
9 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
21 Mar – 4 Apr
11 Jun
5-7 wk
9 May
16 Jul
0 wk
9 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
24 – 31 May
3-4 wk
21 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 May
27 May
4-5 wk
21 Jun
24 Jun
6 wk after
27 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Feb – 14 Mar
28 Mar
8-12 wk
9 May
23 May
0 wk
30 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
12 Jun
1 wk after
13 May
2 Jun
1 wk after
Maize
Zea mays
8 – 15 May
8 May
3-4 wk
5 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
28 Jun
3-4 wk
17 May
19 Jul
1 wk after
30 May
9 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 May
6 Jul
0 wk
9 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
21 Mar – 4 Apr
11 Jun
5-7 wk
9 May
16 Jul
0 wk
9 May
6 Jul
0 wk
Potato
Solanum tuberosum
13 – 27 Apr
27 May
4-6 wk
25 May
24 Jun
2 wk after
25 May
14 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Mar – 4 Apr
21 Jun
5-7 wk
9 May
26 Jul
0 wk
13 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
24 – 31 May
13 Jun
3-4 wk
21 Jun
4 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
9 Jun
3-4 wk
17 May
30 Jun
1 wk after
30 May
20 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
23 Jun
4-6 wk
9 May
21 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Apr
10 Jul
3-4 wk
9 May
31 Jul
0 wk
13 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
23 Jun
4-6 wk
9 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Apr
2 Jun
2-4 wk
9 May
16 Jun
0 wk
9 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
12 Jun
1 wk after
13 May
2 Jun
1 wk after
Spinach
Spinacia oleracea
11 – 18 Apr
25 Jul
3-4 wk
9 May
15 Aug
0 wk
5 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
10 – 24 Jun
4-6 wk
22 Jul
11 wk after
Garden tomato
Solanum lycopersicum
10 – 24 Apr
17 Apr
6-8 wk
5 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
8 – 22 May
15 Jun
2-4 wk
5 Jun
29 Jun
4 wk after
27 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
23 Jun
4-6 wk
9 May
21 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Apr
25 Jun
3-4 wk
9 May
16 Jul
0 wk
13 May
6 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
10 – 24 May
22 May
4-6 wk
21 Jun
6 wk after
Lemon balm
Melissa officinalis
28 Feb – 14 Mar
21 May
8-10 wk
9 May
16 Jul
0 wk
13 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
13 May
19 Jul
1 wk after
Wild chives
Allium schoenoprasum
14 – 28 Mar
4 Jun
6-8 wk
9 May
16 Jul
0 wk
13 May
6 Jul
1 wk after
Spearmint
Mentha spicata
14 Feb – 14 Mar
21 May
8-12 wk
9 May
16 Jul
0 wk
13 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
9 May
8 Aug
0 wk
30 May
29 Jul
3 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
6 May
8-10 wk
17 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
28 Feb – 14 Mar
11 May
8-10 wk
9 May
6 Jul
0 wk
Oregano
Origanum vulgare
14 – 28 Mar
25 May
6-8 wk
9 May
6 Jul
0 wk
13 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
14 – 28 Mar
25 May
6-8 wk
9 May
6 Jul
0 wk
13 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
28 Mar
10-14 wk
17 May
6 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
24 – 31 May
29 May
3-4 wk
21 Jun
6 wk after
Cornflower
Centaurea cyanus
9 May
16 Jul
0 wk
13 May
6 Jul
1 wk after
Statice
Limonium sinuatum
27 Mar – 10 Apr
27 Apr
8-10 wk
5 Jun
22 Jun
4 wk after
Sweet William
Dianthus barbatus
14 – 28 Mar
6-8 wk
9 May
0 wk
25 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
10 – 24 Apr
11 May
6-8 wk
5 Jun
22 Jun
4 wk after
22 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Apr
14 May
6-8 wk
28 May
25 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
18 Apr – 16 May
28 May
4-8 wk
13 Jun
25 Jun
5 wk after
13 Jun
15 Jun
5 wk after
Foxglove
Digitalis purpurea
28 Feb – 14 Mar
8-10 wk
9 May
0 wk
30 May
3 wk after
Busy lizzie
Impatiens walleriana
29 Mar – 26 Apr
17 Jun
8-12 wk
21 Jun
12 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
10 – 24 Apr
21 May
6-8 wk
5 Jun
2 Jul
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
24 Apr – 8 May
30 Apr
4-6 wk
5 Jun
4 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
14 Apr
8-10 wk
17 May
9 Jun
1 wk after
Love in a mist
Nigella damascena
9 May
1 Jul
0 wk
13 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
10 – 24 Apr
1 May
6-8 wk
5 Jun
12 Jun
4 wk after
22 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
14 Apr
8-12 wk
17 May
9 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
1 – 29 Mar
22 Mar
8-12 wk
24 May
2 wk after
Regal-foxtail
Ptilotus nobilis
29 Mar – 26 Apr
14 Apr
8-12 wk
21 Jun
6 wk after
Globe amaranth
Gomphrena globosa
26 Apr – 10 May
28 Apr
6-8 wk
21 Jun
6 wk after
Corn poppy
Papaver rhoeas
9 May
16 Jul
0 wk
13 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
11 May
8-12 wk
9 May
6 Jul
0 wk
25 May
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
12 – 26 Apr
7 May
8-10 wk
21 Jun
2 Jul
6 wk after
Sweet pea
Lathyrus odoratus
14 Mar – 4 Apr
1 Jun
5-8 wk
9 May
6 Jul
0 wk
Stock
Matthiola incana
14 – 28 Mar
4 Jun
6-8 wk
9 May
16 Jul
0 wk
30 May
6 Jul
3 wk after
Wormwood
Artemisia absinthium
14 – 28 Mar
5 May
6-8 wk
9 May
16 Jun
0 wk
30 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
10 – 24 May
4-6 wk
21 Jun
6 wk after
Garden pansy
Viola × wittrockiana
28 Feb – 14 Mar
21 May
8-10 wk
9 May
16 Jul
0 wk
25 May
6 Jul
2 wk after
Petunia
Petunia
13 Mar – 10 Apr
27 Apr
8-12 wk
5 Jun
22 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
28 Apr
6-8 wk
17 May
9 Jun
1 wk after
27 Jun
7 wk after
Common zinnia
Zinnia elegans
24 Apr – 8 May
30 May
4-6 wk
5 Jun
27 Jun
4 wk after
Common morning glory
Ipomoea purpurea
17 – 31 May
29 May
3-5 wk
21 Jun
6 wk after
Garden cosmos
Cosmos bipinnatus
24 Apr – 8 May
28 May
4-6 wk
5 Jun
25 Jun
4 wk after
27 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
29 Mar – 26 Apr
22 May
8-12 wk
21 Jun
17 Jul
6 wk after
Bee balm
Monarda didyma
14 Feb – 14 Mar
21 Apr
8-12 wk
9 May
16 Jun
0 wk
13 Jun
5 wk after
Yarrow
Achillea millefolium
14 – 28 Mar
5 Apr
6-8 wk
9 May
17 May
0 wk
30 May
3 wk after
Safflower
Carthamus tinctorius
9 May
16 Jun
0 wk
13 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
14 – 28 Mar
25 May
6-8 wk
9 May
6 Jul
0 wk
21 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
28 Mar – 11 Apr
8 Jun
4-6 wk
9 May
6 Jul
0 wk
30 May
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
13 – 27 Mar
27 Mar
10-12 wk
5 Jun
5 Jun
4 wk after
Sunflower
Helianthus annuus
8 – 15 May
5 Jun
3-4 wk
5 Jun
26 Jun
4 wk after
13 Jun
16 Jun
5 wk after
China aster
Callistephus chinensis
10 – 24 Apr
25 May
6-8 wk
5 Jun
6 Jul
4 wk after
27 Jun
7 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
21 May
6-8 wk
24 May
2 Jul
2 wk after
27 Jun
7 wk after
Hollyhock
Alcea rosea
14 – 28 Mar
6-8 wk
9 May
0 wk
30 May
3 wk after
Alpine delphinium
Delphinium elatum
14 Feb – 14 Mar
21 Apr
8-12 wk
9 May
16 Jun
0 wk
13 Jun
5 wk after
African marigold
Tagetes erecta
10 – 24 Apr
21 May
6-8 wk
5 Jun
2 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
15 May
6-8 wk
17 May
26 Jun
1 wk after
27 Jun
7 wk after
Wood sage
Salvia nemorosa
28 Feb – 14 Mar
11 Apr
8-10 wk
9 May
6 Jun
0 wk
13 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
12 Apr – 10 May
8 May
6-10 wk
21 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
9 May
10 Jul
0 wk
13 May
30 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
27 Mar – 10 Apr
29 Apr
8-10 wk
5 Jun
24 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Mar
5 May
6-8 wk
9 May
16 Jun
0 wk
30 May
6 Jun
3 wk after