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Rel. frost
Last spring frost (0°C) 13 Mar Normal year · 20 years of data
Frost-free season 269 days 13 Mar – 7 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)
23 Jan – 6 Feb
22 Jun
5-7 wk
13 Mar
27 Jul
0 wk
7 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
30 Jan – 13 Feb
4 Jul
4-6 wk
13 Mar
1 Aug
0 wk
7 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
7 Feb – 7 Mar
28 Apr
8-12 wk
2 May
23 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
23 Jan – 6 Feb
17 Jun
5-7 wk
13 Mar
22 Jul
0 wk
26 Jan
12 Jul
7 wk before
Garden cucumber
Cucumis sativus
4 – 11 Apr
3 Jul
3-4 wk
2 May
24 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
28 Mar – 4 Apr
14 Jun
4-5 wk
2 May
12 Jul
7 wk after
23 Apr
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
23 – 30 May
3 Jun
3-4 wk
20 Jun
24 Jun
14 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Dec – 16 Jan
7 Apr
8-12 wk
13 Mar
2 Jun
0 wk
26 Mar
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
7 Mar
22 Jun
1 wk before
7 Mar
12 Jun
1 wk before
Maize
Zea mays
23 – 30 Mar
23 Jun
3-4 wk
20 Apr
14 Jul
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 Feb
11 Jul
3-4 wk
15 Mar
1 Aug
0 wk
26 Mar
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 Mar
12 Jul
0 wk
28 Feb
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
23 Jan – 6 Feb
17 Jun
5-7 wk
13 Mar
22 Jul
0 wk
26 Jan
12 Jul
7 wk before
Potato
Solanum tuberosum
4 – 18 Feb
14 Jun
4-6 wk
18 Mar
12 Jul
1 wk after
18 Mar
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Jan – 6 Feb
27 Jun
5-7 wk
13 Mar
1 Aug
0 wk
7 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
4 – 11 Apr
16 Jul
3-4 wk
2 May
6 Aug
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 Feb
11 Jul
3-4 wk
15 Mar
1 Aug
0 wk
26 Mar
22 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
30 Jan – 13 Feb
29 Jun
4-6 wk
13 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Feb
16 Jul
3-4 wk
13 Mar
6 Aug
0 wk
7 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
30 Jan – 13 Feb
29 Jun
4-6 wk
13 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
31 Jan – 14 Feb
8 Jun
2-4 wk
28 Feb
22 Jun
2 wk before
28 Feb
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
7 Mar
22 Jun
1 wk before
7 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
13 – 20 Feb
31 Jul
3-4 wk
13 Mar
21 Aug
0 wk
21 Feb
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
14 – 28 Apr
4-6 wk
26 May
11 wk after
Garden tomato
Solanum lycopersicum
23 Feb – 9 Mar
2 Jun
6-8 wk
20 Apr
14 Jul
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
23 Mar – 6 Apr
18 Jul
2-4 wk
20 Apr
1 Aug
5 wk after
23 Apr
22 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
30 Jan – 13 Feb
29 Jun
4-6 wk
13 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Feb
1 Jul
3-4 wk
13 Mar
22 Jul
0 wk
7 Mar
12 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
21 Mar – 4 Apr
24 Jun
4-6 wk
2 May
22 Jul
7 wk after
Lemon balm
Melissa officinalis
2 – 16 Jan
27 May
8-10 wk
13 Mar
22 Jul
0 wk
8 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
7 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
16 – 30 Jan
10 Jun
6-8 wk
13 Mar
22 Jul
0 wk
7 Feb
12 Jul
5 wk before
Spearmint
Mentha spicata
19 Dec – 16 Jan
27 May
8-12 wk
13 Mar
22 Jul
0 wk
8 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
13 Mar
21 Aug
0 wk
26 Mar
11 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
2 – 16 Jan
12 May
8-10 wk
13 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
Season too short
2 – 16 Jan
17 May
8-10 wk
13 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
16 – 30 Jan
31 May
6-8 wk
13 Mar
12 Jul
0 wk
8 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
16 – 30 Jan
31 May
6-8 wk
13 Mar
12 Jul
0 wk
7 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
7 Dec – 4 Jan
13 Apr
10-14 wk
15 Mar
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
4 – 11 Apr
1 Jul
3-4 wk
2 May
22 Jul
7 wk after
Cornflower
Centaurea cyanus
13 Mar
22 Jul
0 wk
7 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
9 – 23 Feb
17 May
8-10 wk
20 Apr
12 Jul
5 wk after
Sweet William
Dianthus barbatus
16 – 30 Jan
6-8 wk
13 Mar
0 wk
18 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
23 Feb – 9 Mar
31 May
6-8 wk
20 Apr
12 Jul
5 wk after
26 May
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
16 Feb – 2 Mar
31 May
6-8 wk
13 Apr
12 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
11 Feb – 11 Mar
14 Jun
4-8 wk
8 Apr
12 Jul
4 wk after
8 Apr
2 Jul
4 wk after
Foxglove
Digitalis purpurea
2 – 16 Jan
8-10 wk
13 Mar
0 wk
26 Mar
2 wk after
Busy lizzie
Impatiens walleriana
7 Feb – 7 Mar
12 Jul
8-12 wk
2 May
6 Sep
7 wk after
Creeping zinnia
Sanvitalia procumbens
23 Feb – 9 Mar
10 Jun
6-8 wk
20 Apr
22 Jul
5 wk after
Hyacinth bean
Dolichos lablab
10 – 24 Apr
17 May
4-6 wk
22 May
14 Jun
10 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Jan
27 Apr
8-10 wk
15 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
13 Mar
7 Jul
0 wk
7 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
23 Feb – 9 Mar
21 May
6-8 wk
20 Apr
2 Jul
5 wk after
26 May
22 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
21 Dec – 18 Jan
27 Apr
8-12 wk
15 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
26 Jan – 23 Feb
28 Mar
8-12 wk
20 Apr
23 May
5 wk after
Regal-foxtail
Ptilotus nobilis
7 Feb – 7 Mar
17 May
8-12 wk
2 May
12 Jul
7 wk after
Globe amaranth
Gomphrena globosa
7 – 21 Mar
31 May
6-8 wk
2 May
12 Jul
7 wk after
Corn poppy
Papaver rhoeas
13 Mar
22 Jul
0 wk
7 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
19 Dec – 16 Jan
17 May
8-12 wk
13 Mar
12 Jul
0 wk
18 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
21 Feb – 7 Mar
27 May
8-10 wk
2 May
22 Jul
7 wk after
Sweet pea
Lathyrus odoratus
16 Jan – 6 Feb
7 Jun
5-8 wk
13 Mar
12 Jul
0 wk
Stock
Matthiola incana
16 – 30 Jan
10 Jun
6-8 wk
13 Mar
22 Jul
0 wk
26 Mar
12 Jul
2 wk after
Wormwood
Artemisia absinthium
Season too short
16 – 30 Jan
11 May
6-8 wk
13 Mar
22 Jun
0 wk
28 Feb
12 Jun
2 wk before
Mexican sunflower
Tithonia rotundifolia
21 Mar – 4 Apr
9 Jun
4-6 wk
2 May
7 Jul
7 wk after
Garden pansy
Viola × wittrockiana
Season too short
2 – 16 Jan
27 May
8-10 wk
13 Mar
22 Jul
0 wk
21 Feb
12 Jul
3 wk before
Petunia
Petunia
26 Jan – 23 Feb
17 May
8-12 wk
20 Apr
12 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
18 Jan – 1 Feb
11 May
6-8 wk
15 Mar
22 Jun
0 wk
23 Apr
12 Jun
6 wk after
Common zinnia
Zinnia elegans
9 – 23 Mar
24 Jun
4-6 wk
20 Apr
22 Jul
5 wk after
Common morning glory
Ipomoea purpurea
28 Mar – 11 Apr
1 Jul
3-5 wk
2 May
22 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
9 – 23 Mar
14 Jun
4-6 wk
20 Apr
12 Jul
5 wk after
23 Apr
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
27 Feb – 27 Mar
16 Jun
8-12 wk
22 May
11 Aug
10 wk after
Bee balm
Monarda didyma
19 Dec – 16 Jan
27 Apr
8-12 wk
13 Mar
22 Jun
0 wk
8 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
Season too short
16 – 30 Jan
11 Apr
6-8 wk
13 Mar
23 May
0 wk
28 Feb
13 May
2 wk before
Safflower
Carthamus tinctorius
13 Mar
22 Jun
0 wk
7 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
16 – 30 Jan
31 May
6-8 wk
13 Mar
12 Jul
0 wk
26 Jan
2 Jul
7 wk before
Bishop's flower
Ammi majus
30 Jan – 13 Feb
14 Jun
4-6 wk
13 Mar
12 Jul
0 wk
26 Mar
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
7 – 21 Feb
13 Apr
10-12 wk
2 May
22 Jun
7 wk after
Sunflower
Helianthus annuus
23 – 30 Mar
21 Jun
3-4 wk
20 Apr
12 Jul
5 wk after
8 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
23 Feb – 9 Mar
10 Jun
6-8 wk
20 Apr
22 Jul
5 wk after
23 Apr
12 Jul
6 wk after
Annual phlox
Phlox drummondii
9 – 23 Feb
10 Jun
6-8 wk
6 Apr
22 Jul
3 wk after
23 Apr
12 Jul
6 wk after
Hollyhock
Alcea rosea
16 – 30 Jan
6-8 wk
13 Mar
0 wk
26 Mar
2 wk after
Alpine delphinium
Delphinium elatum
19 Dec – 16 Jan
27 Apr
8-12 wk
13 Mar
22 Jun
0 wk
8 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
23 Feb – 9 Mar
10 Jun
6-8 wk
20 Apr
22 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
18 Jan – 1 Feb
31 May
6-8 wk
15 Mar
12 Jul
0 wk
23 Apr
2 Jul
6 wk after
Wood sage
Salvia nemorosa
2 – 16 Jan
17 Apr
8-10 wk
13 Mar
12 Jun
0 wk
8 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
21 Feb – 21 Mar
10 Jun
6-10 wk
2 May
22 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
13 Mar
22 Jul
0 wk
7 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
9 – 23 Feb
17 May
8-10 wk
20 Apr
12 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
16 – 30 Jan
11 May
6-8 wk
13 Mar
22 Jun
0 wk
28 Feb
12 Jun
2 wk before