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Method
Rel. frost
Last spring frost (0°C) 19 May Frost 3 of 4 years · 20 years of data
Frost-free season 106 days 19 May – 2 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)
31 Mar – 14 Apr
12 Jun
5-7 wk
19 May
17 Jul
0 wk
20 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
24 Jun
4-6 wk
19 May
22 Jul
0 wk
20 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
2 – 30 Mar
14 Mar
8-12 wk
25 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
7 Jun
5-7 wk
19 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
27 Apr – 4 May
25 May
3-4 wk
25 May
15 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
28 May
4-5 wk
1 Jun
25 Jun
2 wk after
13 Jun
15 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
24 Feb – 24 Mar
12 Mar
8-12 wk
19 May
0 wk
1 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 May
27 May
0 wk
20 May
0 wk
Maize
Zea mays
Greenhouse
21 – 28 Apr
15 May
3-4 wk
19 May
5 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
24 Jun
3-4 wk
21 May
15 Jul
0 wk
1 Jun
5 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
29 Jun
0 wk
19 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
7 Jun
5-7 wk
19 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
6 May
4-6 wk
29 May
3 Jun
1 wk after
29 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
14 Jun
5-7 wk
19 May
19 Jul
0 wk
20 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
4 – 11 May
30 May
3-4 wk
1 Jun
20 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
15 May
3-4 wk
21 May
5 Jun
0 wk
1 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
3 Jul
3-4 wk
19 May
24 Jul
0 wk
20 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
17 May
2-4 wk
19 May
31 May
0 wk
19 May
21 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 May
27 May
0 wk
20 May
0 wk
Spinach
Spinacia oleracea
21 – 28 Apr
21 Jul
3-4 wk
19 May
11 Aug
0 wk
16 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
24 Mar – 7 Apr
24 Apr
6-8 wk
19 May
5 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
27 Apr – 11 May
1 Jun
2-4 wk
25 May
15 Jun
1 wk after
13 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
19 Jun
4-6 wk
19 May
17 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
18 Jun
3-4 wk
19 May
9 Jul
0 wk
20 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
13 – 27 Apr
23 May
4-6 wk
25 May
20 Jun
1 wk after
Lemon balm
Melissa officinalis
10 – 24 Mar
14 May
8-10 wk
19 May
9 Jul
0 wk
13 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
20 May
15 Jul
0 wk
Wild chives
Allium schoenoprasum
24 Mar – 7 Apr
31 May
6-8 wk
19 May
12 Jul
0 wk
20 May
2 Jul
0 wk
Spearmint
Mentha spicata
24 Feb – 24 Mar
17 May
8-12 wk
19 May
12 Jul
0 wk
13 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
19 May
4 Aug
0 wk
1 Jun
25 Jul
2 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
2 May
8-10 wk
21 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
10 – 24 Mar
7 May
8-10 wk
19 May
2 Jul
0 wk
Oregano
Origanum vulgare
24 Mar – 7 Apr
21 May
6-8 wk
19 May
2 Jul
0 wk
13 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
24 Mar – 7 Apr
21 May
6-8 wk
19 May
2 Jul
0 wk
20 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
12 Feb – 12 Mar
23 Mar
10-14 wk
21 May
1 Jun
0 wk

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
27 Apr – 4 May
30 May
3-4 wk
25 May
20 Jun
1 wk after
Cornflower
Centaurea cyanus
19 May
12 Jul
0 wk
20 May
2 Jul
0 wk
Statice
Limonium sinuatum
Fleece
16 – 30 Mar
20 Apr
8-10 wk
25 May
15 Jun
1 wk after
Sweet William
Dianthus barbatus
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
29 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
30 Mar – 13 Apr
4 May
6-8 wk
25 May
15 Jun
1 wk after
8 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
4 – 18 Apr
29 Apr
6-8 wk
30 May
10 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
6 Apr – 4 May
24 May
4-8 wk
1 Jun
21 Jun
2 wk after
1 Jun
11 Jun
2 wk after
Foxglove
Digitalis purpurea
10 – 24 Mar
8-10 wk
19 May
0 wk
1 Jun
2 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
26 May
8-12 wk
20 Jun
21 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
5 May
6-8 wk
1 Jun
16 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
2 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Mar
10 Apr
8-10 wk
21 May
5 Jun
0 wk
Love in a mist
Nigella damascena
19 May
24 Jun
0 wk
20 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
30 Mar – 13 Apr
24 Apr
6-8 wk
25 May
5 Jun
1 wk after
8 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
26 Feb – 26 Mar
10 Apr
8-12 wk
21 May
5 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
24 Feb – 24 Mar
18 Mar
8-12 wk
19 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
2 – 30 Mar
15 Apr
8-12 wk
25 May
10 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
30 Mar – 13 Apr
29 Apr
6-8 wk
25 May
10 Jun
1 wk after
Corn poppy
Papaver rhoeas
19 May
9 Jul
0 wk
20 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
24 Feb – 24 Mar
4 May
8-12 wk
19 May
29 Jun
0 wk
29 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
23 Mar – 6 Apr
30 Apr
8-10 wk
1 Jun
25 Jun
2 wk after
Sweet pea
Lathyrus odoratus
24 Mar – 14 Apr
28 May
5-8 wk
19 May
2 Jul
0 wk
Stock
Matthiola incana
24 Mar – 7 Apr
28 May
6-8 wk
19 May
9 Jul
0 wk
1 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
24 Mar – 7 Apr
1 May
6-8 wk
19 May
12 Jun
0 wk
1 Jun
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
13 – 27 Apr
8 May
4-6 wk
25 May
5 Jun
1 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Mar
17 May
8-10 wk
19 May
12 Jul
0 wk
29 May
2 Jul
1 wk after
Petunia
Petunia
Fleece
2 – 30 Mar
20 Apr
8-12 wk
25 May
15 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Mar – 9 Apr
24 Apr
6-8 wk
21 May
5 Jun
0 wk
1 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
13 – 27 Apr
23 May
4-6 wk
25 May
20 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
20 Apr – 4 May
30 May
3-5 wk
25 May
20 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
13 – 27 Apr
24 May
4-6 wk
25 May
21 Jun
1 wk after
13 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
9 Mar – 6 Apr
15 May
8-12 wk
1 Jun
10 Jul
2 wk after
Bee balm
Monarda didyma
24 Feb – 24 Mar
14 Apr
8-12 wk
19 May
9 Jun
0 wk
13 Jun
4 wk after
Yarrow
Achillea millefolium
24 Mar – 7 Apr
1 Apr
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Safflower
Carthamus tinctorius
19 May
12 Jun
0 wk
20 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
24 Mar – 7 Apr
21 May
6-8 wk
19 May
2 Jul
0 wk
3 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
7 – 21 Apr
1 Jun
4-6 wk
19 May
29 Jun
0 wk
1 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
23 Mar
10-12 wk
25 May
1 Jun
1 wk after
Sunflower
Helianthus annuus
4 – 11 May
31 May
3-4 wk
1 Jun
21 Jun
2 wk after
13 Jun
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
20 May
6-8 wk
1 Jun
1 Jul
2 wk after
1 Jul
6 wk after
Annual phlox
Phlox drummondii
30 Mar – 13 Apr
5 May
6-8 wk
25 May
16 Jun
1 wk after
1 Jul
6 wk after
Hollyhock
Alcea rosea
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Alpine delphinium
Delphinium elatum
24 Feb – 24 Mar
14 Apr
8-12 wk
19 May
9 Jun
0 wk
13 Jun
4 wk after
African marigold
Tagetes erecta
6 – 20 Apr
5 May
6-8 wk
1 Jun
16 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
26 Mar – 9 Apr
10 May
6-8 wk
21 May
21 Jun
0 wk
1 Jul
6 wk after
Wood sage
Salvia nemorosa
10 – 24 Mar
4 Apr
8-10 wk
19 May
30 May
0 wk
13 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
16 Mar – 13 Apr
9 May
6-10 wk
25 May
20 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
19 May
7 Jul
0 wk
20 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
16 – 30 Mar
30 Apr
8-10 wk
25 May
25 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
24 Mar – 7 Apr
1 May
6-8 wk
19 May
12 Jun
0 wk
1 Jun
2 Jun
2 wk after