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Rel. frost
Last spring frost (0°C) 14 Mar Normal year · 20 years of data
Frost-free season 266 days 14 Mar – 5 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)
24 Jan – 7 Feb
19 Jun
5-7 wk
14 Mar
24 Jul
0 wk
8 Mar
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
31 Jan – 14 Feb
1 Jul
4-6 wk
14 Mar
29 Jul
0 wk
8 Mar
19 Jul
1 wk before
Chili pepper
Capsicum annuum
8 Feb – 8 Mar
24 Apr
8-12 wk
3 May
19 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
24 Jan – 7 Feb
14 Jun
5-7 wk
14 Mar
19 Jul
0 wk
27 Jan
9 Jul
7 wk before
Garden cucumber
Cucumis sativus
5 – 12 Apr
4 Jul
3-4 wk
3 May
25 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
29 Mar – 5 Apr
11 Jun
4-5 wk
3 May
9 Jul
7 wk after
24 Apr
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Fleece
5 – 12 May
8 Jun
3-4 wk
2 Jun
29 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Dec – 17 Jan
4 Apr
8-12 wk
14 Mar
30 May
0 wk
27 Mar
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
8 Mar
19 Jun
1 wk before
8 Mar
9 Jun
1 wk before
Maize
Zea mays
24 – 31 Mar
24 Jun
3-4 wk
21 Apr
15 Jul
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Feb
8 Jul
3-4 wk
16 Mar
29 Jul
0 wk
27 Mar
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Mar
9 Jul
0 wk
1 Mar
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
24 Jan – 7 Feb
14 Jun
5-7 wk
14 Mar
19 Jul
0 wk
27 Jan
9 Jul
7 wk before
Potato
Solanum tuberosum
5 – 19 Feb
11 Jun
4-6 wk
19 Mar
9 Jul
1 wk after
19 Mar
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Jan – 7 Feb
24 Jun
5-7 wk
14 Mar
29 Jul
0 wk
8 Mar
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 Apr
13 Jul
3-4 wk
3 May
3 Aug
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Feb
7 Jul
3-4 wk
16 Mar
28 Jul
0 wk
27 Mar
18 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
31 Jan – 14 Feb
26 Jun
4-6 wk
14 Mar
24 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Feb
13 Jul
3-4 wk
14 Mar
3 Aug
0 wk
8 Mar
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
31 Jan – 14 Feb
26 Jun
4-6 wk
14 Mar
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 Feb
5 Jun
2-4 wk
1 Mar
19 Jun
2 wk before
1 Mar
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
8 Mar
19 Jun
1 wk before
8 Mar
9 Jun
1 wk before
Spinach
Spinacia oleracea
14 – 21 Feb
28 Jul
3-4 wk
14 Mar
18 Aug
0 wk
22 Feb
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
15 – 29 Apr
4-6 wk
27 May
11 wk after
Garden tomato
Solanum lycopersicum
24 Feb – 10 Mar
3 Jun
6-8 wk
21 Apr
15 Jul
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
24 Mar – 7 Apr
15 Jul
2-4 wk
21 Apr
29 Jul
5 wk after
24 Apr
19 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
31 Jan – 14 Feb
26 Jun
4-6 wk
14 Mar
24 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Feb
28 Jun
3-4 wk
14 Mar
19 Jul
0 wk
8 Mar
9 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
22 Mar – 5 Apr
21 Jun
4-6 wk
3 May
19 Jul
7 wk after
Lemon balm
Melissa officinalis
3 – 17 Jan
24 May
8-10 wk
14 Mar
19 Jul
0 wk
9 Apr
9 Jul
4 wk after
Dill
Anethum graveolens
8 Mar
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
17 – 31 Jan
7 Jun
6-8 wk
14 Mar
19 Jul
0 wk
8 Feb
9 Jul
5 wk before
Spearmint
Mentha spicata
20 Dec – 17 Jan
24 May
8-12 wk
14 Mar
19 Jul
0 wk
9 Apr
9 Jul
4 wk after
Coriander
Coriandrum sativum
14 Mar
18 Aug
0 wk
27 Mar
8 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
3 – 17 Jan
9 May
8-10 wk
14 Mar
4 Jul
0 wk
Common thyme
Thymus vulgaris
Season too short
3 – 17 Jan
14 May
8-10 wk
14 Mar
9 Jul
0 wk
Oregano
Origanum vulgare
17 – 31 Jan
28 May
6-8 wk
14 Mar
9 Jul
0 wk
9 Apr
29 Jun
4 wk after
Parsley
Petroselinum crispum
17 – 31 Jan
28 May
6-8 wk
14 Mar
9 Jul
0 wk
8 Mar
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
8 Dec – 5 Jan
10 Apr
10-14 wk
16 Mar
19 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
5 – 12 Apr
28 Jun
3-4 wk
3 May
19 Jul
7 wk after
Cornflower
Centaurea cyanus
14 Mar
19 Jul
0 wk
8 Mar
9 Jul
1 wk before
Statice
Limonium sinuatum
10 – 24 Feb
14 May
8-10 wk
21 Apr
9 Jul
5 wk after
Sweet William
Dianthus barbatus
17 – 31 Jan
6-8 wk
14 Mar
0 wk
19 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
24 Feb – 10 Mar
28 May
6-8 wk
21 Apr
9 Jul
5 wk after
27 May
29 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
17 Feb – 3 Mar
28 May
6-8 wk
14 Apr
9 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
12 Feb – 12 Mar
11 Jun
4-8 wk
9 Apr
9 Jul
4 wk after
9 Apr
29 Jun
4 wk after
Foxglove
Digitalis purpurea
3 – 17 Jan
8-10 wk
14 Mar
0 wk
27 Mar
2 wk after
Busy lizzie
Impatiens walleriana
8 Feb – 8 Mar
9 Jul
8-12 wk
3 May
3 Sep
7 wk after
Creeping zinnia
Sanvitalia procumbens
24 Feb – 10 Mar
7 Jun
6-8 wk
21 Apr
19 Jul
5 wk after
Hyacinth bean
Dolichos lablab
11 – 25 Apr
18 May
4-6 wk
23 May
15 Jun
10 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Jan
24 Apr
8-10 wk
16 Mar
19 Jun
0 wk
Love in a mist
Nigella damascena
14 Mar
4 Jul
0 wk
8 Mar
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
24 Feb – 10 Mar
18 May
6-8 wk
21 Apr
29 Jun
5 wk after
27 May
19 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
22 Dec – 19 Jan
24 Apr
8-12 wk
16 Mar
19 Jun
0 wk
Cardoon
Cynara cardunculus
27 Jan – 24 Feb
25 Mar
8-12 wk
21 Apr
20 May
5 wk after
Regal-foxtail
Ptilotus nobilis
8 Feb – 8 Mar
14 May
8-12 wk
3 May
9 Jul
7 wk after
Globe amaranth
Gomphrena globosa
8 – 22 Mar
28 May
6-8 wk
3 May
9 Jul
7 wk after
Corn poppy
Papaver rhoeas
14 Mar
19 Jul
0 wk
8 Mar
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
20 Dec – 17 Jan
14 May
8-12 wk
14 Mar
9 Jul
0 wk
19 Mar
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
22 Feb – 8 Mar
24 May
8-10 wk
3 May
19 Jul
7 wk after
Sweet pea
Lathyrus odoratus
17 Jan – 7 Feb
4 Jun
5-8 wk
14 Mar
9 Jul
0 wk
Stock
Matthiola incana
17 – 31 Jan
7 Jun
6-8 wk
14 Mar
19 Jul
0 wk
27 Mar
9 Jul
2 wk after
Wormwood
Artemisia absinthium
Season too short
17 – 31 Jan
8 May
6-8 wk
14 Mar
19 Jun
0 wk
1 Mar
9 Jun
2 wk before
Mexican sunflower
Tithonia rotundifolia
22 Mar – 5 Apr
6 Jun
4-6 wk
3 May
4 Jul
7 wk after
Garden pansy
Viola × wittrockiana
Season too short
3 – 17 Jan
24 May
8-10 wk
14 Mar
19 Jul
0 wk
22 Feb
9 Jul
3 wk before
Petunia
Petunia
27 Jan – 24 Feb
14 May
8-12 wk
21 Apr
9 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Jan – 2 Feb
8 May
6-8 wk
16 Mar
19 Jun
0 wk
24 Apr
9 Jun
6 wk after
Common zinnia
Zinnia elegans
10 – 24 Mar
21 Jun
4-6 wk
21 Apr
19 Jul
5 wk after
Common morning glory
Ipomoea purpurea
29 Mar – 12 Apr
28 Jun
3-5 wk
3 May
19 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
10 – 24 Mar
11 Jun
4-6 wk
21 Apr
9 Jul
5 wk after
24 Apr
29 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
28 Feb – 28 Mar
13 Jun
8-12 wk
23 May
8 Aug
10 wk after
Bee balm
Monarda didyma
20 Dec – 17 Jan
24 Apr
8-12 wk
14 Mar
19 Jun
0 wk
9 Apr
9 Jun
4 wk after
Yarrow
Achillea millefolium
Season too short
17 – 31 Jan
8 Apr
6-8 wk
14 Mar
20 May
0 wk
1 Mar
10 May
2 wk before
Safflower
Carthamus tinctorius
14 Mar
19 Jun
0 wk
8 Mar
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
17 – 31 Jan
28 May
6-8 wk
14 Mar
9 Jul
0 wk
27 Jan
29 Jun
7 wk before
Bishop's flower
Ammi majus
31 Jan – 14 Feb
11 Jun
4-6 wk
14 Mar
9 Jul
0 wk
27 Mar
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
8 – 22 Feb
10 Apr
10-12 wk
3 May
19 Jun
7 wk after
Sunflower
Helianthus annuus
24 – 31 Mar
18 Jun
3-4 wk
21 Apr
9 Jul
5 wk after
9 Apr
29 Jun
4 wk after
China aster
Callistephus chinensis
24 Feb – 10 Mar
7 Jun
6-8 wk
21 Apr
19 Jul
5 wk after
24 Apr
9 Jul
6 wk after
Annual phlox
Phlox drummondii
10 – 24 Feb
7 Jun
6-8 wk
7 Apr
19 Jul
3 wk after
24 Apr
9 Jul
6 wk after
Hollyhock
Alcea rosea
17 – 31 Jan
6-8 wk
14 Mar
0 wk
27 Mar
2 wk after
Alpine delphinium
Delphinium elatum
20 Dec – 17 Jan
24 Apr
8-12 wk
14 Mar
19 Jun
0 wk
9 Apr
9 Jun
4 wk after
African marigold
Tagetes erecta
24 Feb – 10 Mar
7 Jun
6-8 wk
21 Apr
19 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
19 Jan – 2 Feb
28 May
6-8 wk
16 Mar
9 Jul
0 wk
24 Apr
29 Jun
6 wk after
Wood sage
Salvia nemorosa
3 – 17 Jan
14 Apr
8-10 wk
14 Mar
9 Jun
0 wk
9 Apr
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
22 Feb – 22 Mar
7 Jun
6-10 wk
3 May
19 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
14 Mar
19 Jul
0 wk
8 Mar
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
10 – 24 Feb
14 May
8-10 wk
21 Apr
9 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
17 – 31 Jan
8 May
6-8 wk
14 Mar
19 Jun
0 wk
1 Mar
9 Jun
2 wk before