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Method
Rel. frost
Last spring frost (0°C) 30 May Frost 3 of 4 years · 20 years of data
Frost-free season 75 days 30 May – 13 Aug
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)
11 – 25 Apr
15 Jun
5-7 wk
30 May
20 Jul
0 wk
3 Jun
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
18 Apr – 2 May
27 Jun
4-6 wk
30 May
25 Jul
0 wk
3 Jun
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
13 Mar – 10 Apr
8-12 wk
5 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Apr
10 Jun
5-7 wk
30 May
15 Jul
0 wk
30 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
8 – 15 May
19 May
3-4 wk
5 Jun
9 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
8 – 15 May
18 May
4-5 wk
12 Jun
15 Jun
2 wk after
4 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
10 – 17 Jun
3-4 wk
8 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
7 Mar – 4 Apr
24 Mar
8-12 wk
30 May
0 wk
30 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
3 Jun
1 wk after
3 Jun
1 wk after
Maize
Zea mays
Greenhouse
2 – 9 May
9 May
3-4 wk
30 May
30 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 May
14 Jun
3-4 wk
1 Jun
5 Jul
0 wk
20 Jun
25 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 May
25 Jun
0 wk
30 May
15 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Apr
10 Jun
5-7 wk
30 May
15 Jul
0 wk
30 May
5 Jul
0 wk
Potato
Solanum tuberosum
4 – 18 May
4-6 wk
15 Jun
2 wk after
15 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Apr
10 Jun
5-7 wk
30 May
15 Jul
0 wk
3 Jun
5 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
15 – 22 May
24 May
3-4 wk
12 Jun
14 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 May
3-4 wk
1 Jun
0 wk
20 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Apr – 2 May
22 Jun
4-6 wk
30 May
20 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 May
29 Jun
3-4 wk
30 May
20 Jul
0 wk
3 Jun
10 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Apr – 2 May
22 Jun
4-6 wk
30 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
2 – 16 May
12 May
2-4 wk
30 May
0 wk
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
3 Jun
1 wk after
3 Jun
1 wk after
Spinach
Spinacia oleracea
2 – 9 May
24 Jul
3-4 wk
30 May
14 Aug
0 wk
26 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
1 – 15 Jul
4-6 wk
12 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
4 – 18 Apr
18 Apr
6-8 wk
30 May
30 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
8 – 22 May
26 May
2-4 wk
5 Jun
9 Jun
1 wk after
4 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Apr – 2 May
22 Jun
4-6 wk
30 May
20 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 May
14 Jun
3-4 wk
30 May
5 Jul
0 wk
3 Jun
25 Jun
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
Greenhouse
24 Apr – 8 May
27 May
4-6 wk
5 Jun
24 Jun
1 wk after
Lemon balm
Melissa officinalis
21 Mar – 4 Apr
10 May
8-10 wk
30 May
5 Jul
0 wk
4 Jul
5 wk after
Dill
Anethum graveolens
3 Jun
5 Jul
1 wk after
Wild chives
Allium schoenoprasum
4 – 18 Apr
3 Jun
6-8 wk
30 May
15 Jul
0 wk
3 Jun
5 Jul
1 wk after
Spearmint
Mentha spicata
7 Mar – 4 Apr
20 May
8-12 wk
30 May
15 Jul
0 wk
4 Jul
5 Jul
5 wk after
Coriander
Coriandrum sativum
30 May
25 Jul
0 wk
20 Jun
15 Jul
3 wk after
Garden sage
Salvia officinalis
23 Mar – 6 Apr
5 May
8-10 wk
1 Jun
30 Jun
0 wk
Common thyme
Thymus vulgaris
21 Mar – 4 Apr
10 May
8-10 wk
30 May
5 Jul
0 wk
Oregano
Origanum vulgare
4 – 18 Apr
24 May
6-8 wk
30 May
5 Jul
0 wk
4 Jul
5 wk after
Parsley
Petroselinum crispum
4 – 18 Apr
24 May
6-8 wk
30 May
5 Jul
0 wk
3 Jun
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
21 Feb – 21 Mar
21 Mar
10-14 wk
30 May
30 May
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
8 – 15 May
3 Jun
3-4 wk
5 Jun
24 Jun
1 wk after
Cornflower
Centaurea cyanus
30 May
15 Jul
0 wk
3 Jun
5 Jul
1 wk after
Statice
Limonium sinuatum
3 – 17 Apr
9 Apr
8-10 wk
12 Jun
2 wk after
Sweet William
Dianthus barbatus
4 – 18 Apr
6-8 wk
30 May
0 wk
15 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
17 Apr – 1 May
23 Apr
6-8 wk
12 Jun
2 wk after
12 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
15 – 29 Apr
3 May
6-8 wk
10 Jun
14 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
25 Apr – 23 May
21 May
4-8 wk
20 Jun
3 wk after
20 Jun
3 wk after
Foxglove
Digitalis purpurea
21 Mar – 4 Apr
8-10 wk
30 May
0 wk
20 Jun
3 wk after
Busy lizzie
Impatiens walleriana
8 Apr – 6 May
20 May
8-12 wk
1 Jul
15 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
17 Apr – 1 May
3 May
6-8 wk
12 Jun
14 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
1 – 15 May
4-6 wk
12 Jun
2 wk after
Chinese lantern
Physalis alkekengi
23 Mar – 6 Apr
31 Mar
8-10 wk
1 Jun
0 wk
Love in a mist
Nigella damascena
30 May
20 Jun
0 wk
3 Jun
10 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
10 – 24 Apr
25 Apr
6-8 wk
5 Jun
6 Jun
1 wk after
28 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
9 Mar – 6 Apr
31 Mar
8-12 wk
1 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
7 Mar – 4 Apr
21 Mar
8-12 wk
30 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
13 Mar – 10 Apr
19 Apr
8-12 wk
5 Jun
14 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
10 – 24 Apr
3 May
6-8 wk
5 Jun
14 Jun
1 wk after
Corn poppy
Papaver rhoeas
30 May
5 Jul
0 wk
3 Jun
25 Jun
1 wk after
Snapdragon
Antirrhinum majus
7 Mar – 4 Apr
30 Apr
8-12 wk
30 May
25 Jun
0 wk
15 Jun
15 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
3 – 17 Apr
1 May
8-10 wk
12 Jun
26 Jun
2 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Apr
31 May
5-8 wk
30 May
5 Jul
0 wk
Stock
Matthiola incana
4 – 18 Apr
24 May
6-8 wk
30 May
5 Jul
0 wk
20 Jun
25 Jun
3 wk after
Wormwood
Artemisia absinthium
4 – 18 Apr
4 May
6-8 wk
30 May
15 Jun
0 wk
20 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
24 Apr – 8 May
12 May
4-6 wk
5 Jun
9 Jun
1 wk after
Garden pansy
Viola × wittrockiana
21 Mar – 4 Apr
20 May
8-10 wk
30 May
15 Jul
0 wk
15 Jun
5 Jul
2 wk after
Petunia
Petunia
20 Mar – 17 Apr
9 Apr
8-12 wk
12 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
6 – 20 Apr
14 Apr
6-8 wk
1 Jun
0 wk
18 Jul
7 wk after
Common zinnia
Zinnia elegans
Fleece
24 Apr – 8 May
27 May
4-6 wk
5 Jun
24 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
1 – 15 May
3 Jun
3-5 wk
5 Jun
24 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 May
17 May
4-6 wk
12 Jun
14 Jun
2 wk after
18 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
20 Mar – 17 Apr
19 May
8-12 wk
12 Jun
14 Jul
2 wk after
Bee balm
Monarda didyma
7 Mar – 4 Apr
10 Apr
8-12 wk
30 May
5 Jun
0 wk
4 Jul
5 wk after
Yarrow
Achillea millefolium
4 – 18 Apr
4 Apr
6-8 wk
30 May
0 wk
20 Jun
3 wk after
Safflower
Carthamus tinctorius
30 May
15 Jun
0 wk
3 Jun
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
4 – 18 Apr
24 May
6-8 wk
30 May
5 Jul
0 wk
12 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
18 Apr – 2 May
28 May
4-6 wk
30 May
25 Jun
0 wk
20 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
13 – 27 Mar
20 Mar
10-12 wk
5 Jun
1 wk after
Sunflower
Helianthus annuus
15 – 22 May
3-4 wk
12 Jun
2 wk after
4 Jul
5 wk after
China aster
Callistephus chinensis
17 Apr – 1 May
3 May
6-8 wk
12 Jun
14 Jun
2 wk after
18 Jul
7 wk after
Annual phlox
Phlox drummondii
10 – 24 Apr
3 May
6-8 wk
5 Jun
14 Jun
1 wk after
18 Jul
7 wk after
Hollyhock
Alcea rosea
4 – 18 Apr
6-8 wk
30 May
0 wk
20 Jun
3 wk after
Alpine delphinium
Delphinium elatum
7 Mar – 4 Apr
10 Apr
8-12 wk
30 May
5 Jun
0 wk
4 Jul
5 wk after
African marigold
Tagetes erecta
17 Apr – 1 May
3 May
6-8 wk
12 Jun
14 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
6 – 20 Apr
23 Apr
6-8 wk
1 Jun
4 Jun
0 wk
18 Jul
7 wk after
Wood sage
Salvia nemorosa
21 Mar – 4 Apr
31 Mar
8-10 wk
30 May
0 wk
4 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
27 Mar – 24 Apr
13 May
6-10 wk
5 Jun
24 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
30 May
29 Jun
0 wk
3 Jun
19 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
27 Mar – 10 Apr
20 Apr
8-10 wk
5 Jun
15 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Apr
4 May
6-8 wk
30 May
15 Jun
0 wk
20 Jun
3 wk after