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Method
Rel. frost
Last spring frost (0°C) 1 Jun Frost 3 of 4 years · 20 years of data
Frost-free season 70 days 1 Jun – 10 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)
13 – 27 Apr
15 Jun
5-7 wk
1 Jun
20 Jul
0 wk
5 Jun
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
20 Apr – 4 May
27 Jun
4-6 wk
1 Jun
25 Jul
0 wk
5 Jun
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
15 Mar – 12 Apr
8-12 wk
7 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
13 – 27 Apr
10 Jun
5-7 wk
1 Jun
15 Jul
0 wk
1 Jun
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
10 – 17 May
27 May
3-4 wk
7 Jun
17 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
10 – 17 May
19 May
4-5 wk
14 Jun
16 Jun
2 wk after
6 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
12 – 19 Jun
3-4 wk
10 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
9 Mar – 6 Apr
31 Mar
8-12 wk
1 Jun
0 wk
1 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
5 Jun
1 wk after
5 Jun
1 wk after
Maize
Zea mays
Greenhouse
4 – 11 May
17 May
3-4 wk
1 Jun
7 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
6 – 13 May
15 Jun
3-4 wk
3 Jun
6 Jul
0 wk
22 Jun
26 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 Jun
29 Jun
0 wk
1 Jun
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
13 – 27 Apr
10 Jun
5-7 wk
1 Jun
15 Jul
0 wk
1 Jun
5 Jul
0 wk
Potato
Solanum tuberosum
6 – 20 May
13 May
4-6 wk
17 Jun
2 wk after
17 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
13 – 27 Apr
14 Jun
5-7 wk
1 Jun
19 Jul
0 wk
5 Jun
9 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
17 – 24 May
1 Jun
3-4 wk
14 Jun
22 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
6 – 13 May
14 May
3-4 wk
3 Jun
4 Jun
0 wk
22 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Apr – 4 May
22 Jun
4-6 wk
1 Jun
20 Jul
0 wk
Lettuce
Lactuca sativa
4 – 11 May
3 Jul
3-4 wk
1 Jun
24 Jul
0 wk
5 Jun
14 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Apr – 4 May
22 Jun
4-6 wk
1 Jun
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 May
18 May
2-4 wk
1 Jun
1 Jun
0 wk
1 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
5 Jun
1 wk after
5 Jun
1 wk after
Spinach
Spinacia oleracea
4 – 11 May
24 Jul
3-4 wk
1 Jun
14 Aug
0 wk
28 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
3 – 17 Jul
4-6 wk
14 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
6 – 20 Apr
26 Apr
6-8 wk
1 Jun
7 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
10 – 24 May
3 Jun
2-4 wk
7 Jun
17 Jun
1 wk after
6 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Apr – 4 May
22 Jun
4-6 wk
1 Jun
20 Jul
0 wk
Garden pea
Pisum sativum
4 – 11 May
18 Jun
3-4 wk
1 Jun
9 Jul
0 wk
5 Jun
29 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
26 Apr – 10 May
27 May
4-6 wk
7 Jun
24 Jun
1 wk after
Lemon balm
Melissa officinalis
23 Mar – 6 Apr
14 May
8-10 wk
1 Jun
9 Jul
0 wk
6 Jul
5 wk after
Dill
Anethum graveolens
5 Jun
6 Jul
1 wk after
Wild chives
Allium schoenoprasum
6 – 20 Apr
3 Jun
6-8 wk
1 Jun
15 Jul
0 wk
5 Jun
5 Jul
1 wk after
Spearmint
Mentha spicata
9 Mar – 6 Apr
20 May
8-12 wk
1 Jun
15 Jul
0 wk
6 Jul
5 wk after
Coriander
Coriandrum sativum
1 Jun
26 Jul
0 wk
22 Jun
16 Jul
3 wk after
Garden sage
Salvia officinalis
25 Mar – 8 Apr
5 May
8-10 wk
3 Jun
30 Jun
0 wk
Common thyme
Thymus vulgaris
23 Mar – 6 Apr
10 May
8-10 wk
1 Jun
5 Jul
0 wk
Oregano
Origanum vulgare
6 – 20 Apr
24 May
6-8 wk
1 Jun
5 Jul
0 wk
6 Jul
5 wk after
Parsley
Petroselinum crispum
6 – 20 Apr
24 May
6-8 wk
1 Jun
5 Jul
0 wk
5 Jun
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
23 Feb – 23 Mar
25 Mar
10-14 wk
1 Jun
3 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
10 – 17 May
3 Jun
3-4 wk
7 Jun
24 Jun
1 wk after
Cornflower
Centaurea cyanus
1 Jun
15 Jul
0 wk
5 Jun
5 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
29 Mar – 12 Apr
22 Apr
8-10 wk
7 Jun
17 Jun
1 wk after
Sweet William
Dianthus barbatus
6 – 20 Apr
6-8 wk
1 Jun
0 wk
17 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
12 – 26 Apr
6 May
6-8 wk
7 Jun
17 Jun
1 wk after
30 Jul
8 wk after
Pinnate dahlia
Dahlia × pinnata
17 Apr – 1 May
3 May
6-8 wk
12 Jun
14 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
11 May – 8 Jun
17 May
4-8 wk
6 Jul
5 wk after
6 Jul
5 wk after
Foxglove
Digitalis purpurea
23 Mar – 6 Apr
8-10 wk
1 Jun
0 wk
22 Jun
3 wk after
Busy lizzie
Impatiens walleriana
10 Apr – 8 May
28 May
8-12 wk
3 Jul
23 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
19 Apr – 3 May
7 May
6-8 wk
14 Jun
18 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
3 – 17 May
4-6 wk
14 Jun
2 wk after
Chinese lantern
Physalis alkekengi
25 Mar – 8 Apr
1 Apr
8-10 wk
3 Jun
0 wk
Love in a mist
Nigella damascena
1 Jun
24 Jun
0 wk
5 Jun
14 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
12 – 26 Apr
26 Apr
6-8 wk
7 Jun
7 Jun
1 wk after
30 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
11 Mar – 8 Apr
1 Apr
8-12 wk
3 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
9 Mar – 6 Apr
21 Mar
8-12 wk
1 Jun
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
15 Mar – 12 Apr
19 Apr
8-12 wk
7 Jun
14 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
12 – 26 Apr
3 May
6-8 wk
7 Jun
14 Jun
1 wk after
Corn poppy
Papaver rhoeas
1 Jun
9 Jul
0 wk
5 Jun
29 Jun
1 wk after
Snapdragon
Antirrhinum majus
9 Mar – 6 Apr
4 May
8-12 wk
1 Jun
29 Jun
0 wk
17 Jun
19 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
5 – 19 Apr
2 May
8-10 wk
14 Jun
27 Jun
2 wk after
Sweet pea
Lathyrus odoratus
6 – 27 Apr
31 May
5-8 wk
1 Jun
5 Jul
0 wk
Stock
Matthiola incana
6 – 20 Apr
28 May
6-8 wk
1 Jun
9 Jul
0 wk
22 Jun
29 Jun
3 wk after
Wormwood
Artemisia absinthium
6 – 20 Apr
4 May
6-8 wk
1 Jun
15 Jun
0 wk
22 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
26 Apr – 10 May
12 May
4-6 wk
7 Jun
9 Jun
1 wk after
Garden pansy
Viola × wittrockiana
23 Mar – 6 Apr
20 May
8-10 wk
1 Jun
15 Jul
0 wk
17 Jun
5 Jul
2 wk after
Petunia
Petunia
Fleece
15 Mar – 12 Apr
22 Apr
8-12 wk
7 Jun
17 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Apr
15 Apr
6-8 wk
3 Jun
0 wk
20 Jul
7 wk after
Common zinnia
Zinnia elegans
Fleece
26 Apr – 10 May
27 May
4-6 wk
7 Jun
24 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
3 – 17 May
3 Jun
3-5 wk
7 Jun
24 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
3 – 17 May
17 May
4-6 wk
14 Jun
14 Jun
2 wk after
20 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
22 Mar – 19 Apr
19 May
8-12 wk
14 Jun
14 Jul
2 wk after
Bee balm
Monarda didyma
9 Mar – 6 Apr
14 Apr
8-12 wk
1 Jun
9 Jun
0 wk
6 Jul
5 wk after
Yarrow
Achillea millefolium
6 – 20 Apr
6-8 wk
1 Jun
0 wk
22 Jun
3 wk after
Safflower
Carthamus tinctorius
1 Jun
15 Jun
0 wk
5 Jun
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
6 – 20 Apr
24 May
6-8 wk
1 Jun
5 Jul
0 wk
14 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
20 Apr – 4 May
1 Jun
4-6 wk
1 Jun
29 Jun
0 wk
22 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
15 – 29 Mar
23 Mar
10-12 wk
7 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
10 – 17 May
2 Jun
3-4 wk
7 Jun
23 Jun
1 wk after
22 Jun
3 wk after
China aster
Callistephus chinensis
Fleece
12 – 26 Apr
22 May
6-8 wk
7 Jun
3 Jul
1 wk after
6 Jul
5 wk after
Annual phlox
Phlox drummondii
12 – 26 Apr
7 May
6-8 wk
7 Jun
18 Jun
1 wk after
20 Jul
7 wk after
Hollyhock
Alcea rosea
6 – 20 Apr
6-8 wk
1 Jun
0 wk
22 Jun
3 wk after
Alpine delphinium
Delphinium elatum
9 Mar – 6 Apr
14 Apr
8-12 wk
1 Jun
9 Jun
0 wk
6 Jul
5 wk after
African marigold
Tagetes erecta
19 Apr – 3 May
7 May
6-8 wk
14 Jun
18 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Apr
17 Apr
6-8 wk
3 Jun
0 wk
20 Jul
7 wk after
Wood sage
Salvia nemorosa
23 Mar – 6 Apr
4 Apr
8-10 wk
1 Jun
0 wk
6 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
29 Mar – 26 Apr
13 May
6-10 wk
7 Jun
24 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
1 Jun
3 Jul
0 wk
5 Jun
23 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
29 Mar – 12 Apr
21 Apr
8-10 wk
7 Jun
16 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
6 – 20 Apr
4 May
6-8 wk
1 Jun
15 Jun
0 wk
22 Jun
3 wk after