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Rel. frost
Last spring frost (0°C) 10 Mar Normal year · 20 years of data
Frost-free season 268 days 10 Mar – 3 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
20 Jan – 3 Feb
21 Jun
5-7 wk
10 Mar
26 Jul
0 wk
4 Feb
16 Jul
5 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
27 Jan – 10 Feb
3 Jul
4-6 wk
10 Mar
31 Jul
0 wk
4 Feb
21 Jul
5 wk before
Chili pepper
Capsicum annuum
4 Feb – 4 Mar
30 Apr
8-12 wk
29 Apr
25 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
20 Jan – 3 Feb
16 Jun
5-7 wk
10 Mar
21 Jul
0 wk
23 Jan
11 Jul
7 wk before
Garden cucumber
Cucumis sativus
1 – 8 Apr
9 Jul
3-4 wk
29 Apr
30 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
25 Mar – 1 Apr
13 Jun
4-5 wk
29 Apr
11 Jul
7 wk after
20 Apr
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
20 – 27 May
9 Jun
3-4 wk
17 Jun
30 Jun
14 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Dec – 13 Jan
6 Apr
8-12 wk
10 Mar
1 Jun
0 wk
23 Mar
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 Mar
21 Jun
1 wk before
4 Mar
11 Jun
1 wk before
Maize
Zea mays
20 – 27 Mar
29 Jun
3-4 wk
17 Apr
20 Jul
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Feb
10 Jul
3-4 wk
12 Mar
31 Jul
0 wk
23 Mar
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 Mar
11 Jul
0 wk
25 Feb
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
20 Jan – 3 Feb
16 Jun
5-7 wk
10 Mar
21 Jul
0 wk
23 Jan
11 Jul
7 wk before
Potato
Solanum tuberosum
1 – 15 Feb
13 Jun
4-6 wk
15 Mar
11 Jul
1 wk after
15 Mar
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Jan – 3 Feb
26 Jun
5-7 wk
10 Mar
31 Jul
0 wk
4 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
1 – 8 Apr
15 Jul
3-4 wk
29 Apr
5 Aug
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Feb
9 Jul
3-4 wk
12 Mar
30 Jul
0 wk
23 Mar
20 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
27 Jan – 10 Feb
28 Jun
4-6 wk
10 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
10 – 17 Feb
15 Jul
3-4 wk
10 Mar
5 Aug
0 wk
4 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
27 Jan – 10 Feb
28 Jun
4-6 wk
10 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Jan – 11 Feb
7 Jun
2-4 wk
25 Feb
21 Jun
2 wk before
25 Feb
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 Mar
21 Jun
1 wk before
4 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
10 – 17 Feb
30 Jul
3-4 wk
10 Mar
20 Aug
0 wk
18 Feb
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
11 – 25 Apr
4-6 wk
23 May
11 wk after
Garden tomato
Solanum lycopersicum
20 Feb – 6 Mar
8 Jun
6-8 wk
17 Apr
20 Jul
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
20 Mar – 3 Apr
17 Jul
2-4 wk
17 Apr
31 Jul
5 wk after
20 Apr
21 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
27 Jan – 10 Feb
28 Jun
4-6 wk
10 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
10 – 17 Feb
30 Jun
3-4 wk
10 Mar
21 Jul
0 wk
4 Mar
11 Jul
1 wk before

Herbs

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