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Rel. frost
Last spring frost (0°C) 17 Apr Normal year · 20 years of data
Frost-free season 211 days 17 Apr – 14 Nov

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
27 Feb – 13 Mar
19 Jun
5-7 wk
17 Apr
24 Jul
0 wk
10 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Mar
1 Jul
4-6 wk
17 Apr
29 Jul
0 wk
10 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
28 Feb – 28 Mar
4 Apr
8-12 wk
23 May
30 May
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Feb – 13 Mar
14 Jun
5-7 wk
17 Apr
19 Jul
0 wk
5 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
25 Apr – 2 May
17 Jun
3-4 wk
23 May
8 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 Apr
11 Jun
4-5 wk
23 May
9 Jul
5 wk after
23 May
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
16 – 23 May
31 May
3-4 wk
13 Jun
21 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Jan – 20 Feb
4 Apr
8-12 wk
17 Apr
30 May
0 wk
27 Apr
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 Apr
19 Jun
1 wk before
10 Apr
9 Jun
1 wk before
Maize
Zea mays
8 – 15 Apr
7 Jun
3-4 wk
6 May
28 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Mar – 2 Apr
8 Jul
3-4 wk
23 Apr
29 Jul
1 wk after
27 Apr
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 Apr
9 Jul
0 wk
5 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Feb – 13 Mar
14 Jun
5-7 wk
17 Apr
19 Jul
0 wk
5 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
11 – 25 Mar
11 Jun
4-6 wk
22 Apr
9 Jul
1 wk after
22 Apr
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Feb – 13 Mar
24 Jun
5-7 wk
17 Apr
29 Jul
0 wk
10 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
25 Apr – 2 May
5 Jul
3-4 wk
23 May
26 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Mar – 2 Apr
8 Jul
3-4 wk
23 Apr
29 Jul
1 wk after
27 Apr
19 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Mar
26 Jun
4-6 wk
17 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Mar
13 Jul
3-4 wk
17 Apr
3 Aug
0 wk
10 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Mar
26 Jun
4-6 wk
17 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Mar
5 Jun
2-4 wk
5 Apr
19 Jun
2 wk before
5 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 Apr
19 Jun
1 wk before
10 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
20 – 27 Mar
28 Jul
3-4 wk
17 Apr
18 Aug
0 wk
30 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
14 – 28 May
4-6 wk
25 Jun
10 wk after
Garden tomato
Solanum lycopersicum
11 – 25 Mar
17 May
6-8 wk
6 May
28 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
8 – 22 Apr
7 Jul
2-4 wk
6 May
21 Jul
3 wk after
23 May
11 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Mar
26 Jun
4-6 wk
17 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Mar
28 Jun
3-4 wk
17 Apr
19 Jul
0 wk
10 Apr
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
11 – 25 Apr
13 Jun
4-6 wk
23 May
11 Jul
5 wk after
Lemon balm
Melissa officinalis
6 – 20 Feb
24 May
8-10 wk
17 Apr
19 Jul
0 wk
8 May
9 Jul
3 wk after
Dill
Anethum graveolens
10 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
20 Feb – 6 Mar
7 Jun
6-8 wk
17 Apr
19 Jul
0 wk
19 Mar
9 Jul
4 wk before
Spearmint
Mentha spicata
23 Jan – 20 Feb
24 May
8-12 wk
17 Apr
19 Jul
0 wk
8 May
9 Jul
3 wk after
Coriander
Coriandrum sativum
17 Apr
18 Aug
0 wk
27 Apr
8 Aug
1 wk after
Garden sage
Salvia officinalis
12 – 26 Feb
9 May
8-10 wk
23 Apr
4 Jul
1 wk after
Common thyme
Thymus vulgaris
6 – 20 Feb
14 May
8-10 wk
17 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
20 Feb – 6 Mar
28 May
6-8 wk
17 Apr
9 Jul
0 wk
8 May
29 Jun
3 wk after
Parsley
Petroselinum crispum
20 Feb – 6 Mar
28 May
6-8 wk
17 Apr
9 Jul
0 wk
10 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
15 Jan – 12 Feb
10 Apr
10-14 wk
23 Apr
19 Jun
1 wk after

Annual flowers

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