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Rel. frost
Last spring frost (0°C) 15 Feb Normal year · 20 years of data
Frost-free season 299 days 15 Feb – 11 Dec

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
Season too short
28 Dec – 11 Jan
22 Jun
5-7 wk
15 Feb
27 Jul
0 wk
12 Jan
17 Jul
5 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
4 – 18 Jan
4 Jul
4-6 wk
15 Feb
1 Aug
0 wk
12 Jan
22 Jul
5 wk before
Chili pepper
Capsicum annuum
12 Jan – 9 Feb
6 May
8-12 wk
6 Apr
1 Jul
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
28 Dec – 11 Jan
17 Jun
5-7 wk
15 Feb
22 Jul
0 wk
31 Dec
12 Jul
7 wk before
Garden cucumber
Cucumis sativus
9 – 16 Mar
11 Jul
3-4 wk
6 Apr
1 Aug
7 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 Mar
14 Jun
4-5 wk
6 Apr
12 Jul
7 wk after
28 Mar
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
27 Apr – 4 May
11 Jun
3-4 wk
25 May
2 Jul
14 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
23 Nov – 21 Dec
7 Apr
8-12 wk
15 Feb
2 Jun
0 wk
2 Feb
23 May
2 wk before
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
12 Jan
22 Jun
5 wk before
12 Jan
12 Jun
5 wk before
Maize
Zea mays
25 Feb – 4 Mar
1 Jul
3-4 wk
25 Mar
22 Jul
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Jan
11 Jul
3-4 wk
17 Feb
1 Aug
0 wk
28 Feb
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 Feb
12 Jul
0 wk
2 Feb
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
28 Dec – 11 Jan
17 Jun
5-7 wk
15 Feb
22 Jul
0 wk
31 Dec
12 Jul
7 wk before
Potato
Solanum tuberosum
Season too short
15 – 29 Dec
14 Jun
4-6 wk
26 Jan
12 Jul
3 wk before
26 Jan
2 Jul
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
Season too short
28 Dec – 11 Jan
27 Jun
5-7 wk
15 Feb
1 Aug
0 wk
12 Jan
22 Jul
5 wk before
Pumpkin
Cucurbita pepo
9 – 16 Mar
16 Jul
3-4 wk
6 Apr
6 Aug
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Season too short
18 – 25 Jan
11 Jul
3-4 wk
15 Feb
1 Aug
0 wk
2 Feb
22 Jul
2 wk before
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
4 – 18 Jan
29 Jun
4-6 wk
15 Feb
27 Jul
0 wk
Lettuce
Lactuca sativa
Season too short
18 – 25 Jan
16 Jul
3-4 wk
15 Feb
6 Aug
0 wk
12 Jan
27 Jul
5 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
4 – 18 Jan
29 Jun
4-6 wk
15 Feb
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
3 – 17 Dec
8 Jun
2-4 wk
31 Dec
22 Jun
7 wk before
31 Dec
12 Jun
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
12 Jan
22 Jun
5 wk before
12 Jan
12 Jun
5 wk before
Spinach
Spinacia oleracea
Season too short
18 – 25 Jan
31 Jul
3-4 wk
15 Feb
21 Aug
0 wk
19 Dec
11 Aug
8 wk before
Sweet potato
Ipomoea batatas
19 Mar – 2 Apr
4-6 wk
30 Apr
11 wk after
Garden tomato
Solanum lycopersicum
28 Jan – 11 Feb
10 Jun
6-8 wk
25 Mar
22 Jul
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
25 Feb – 11 Mar
18 Jul
2-4 wk
25 Mar
1 Aug
5 wk after
28 Mar
22 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
4 – 18 Jan
29 Jun
4-6 wk
15 Feb
27 Jul
0 wk
Garden pea
Pisum sativum
Season too short
18 – 25 Jan
1 Jul
3-4 wk
15 Feb
22 Jul
0 wk
12 Jan
12 Jul
5 wk before

Herbs

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