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Rel. frost
Last spring frost (0°C) 12 Apr Normal year · 20 years of data
Frost-free season 221 days 12 Apr – 19 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)
22 Feb – 8 Mar
18 Jun
5-7 wk
12 Apr
23 Jul
0 wk
5 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Mar
30 Jun
4-6 wk
12 Apr
28 Jul
0 wk
5 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
23 Feb – 23 Mar
15 Apr
8-12 wk
18 May
10 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
22 Feb – 8 Mar
13 Jun
5-7 wk
12 Apr
18 Jul
0 wk
31 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
20 – 27 Apr
21 Jun
3-4 wk
18 May
12 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
13 – 20 Apr
10 Jun
4-5 wk
18 May
8 Jul
5 wk after
18 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
11 – 18 May
3 Jun
3-4 wk
8 Jun
24 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Jan – 15 Feb
3 Apr
8-12 wk
12 Apr
29 May
0 wk
22 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
5 Apr
18 Jun
1 wk before
5 Apr
8 Jun
1 wk before
Maize
Zea mays
3 – 10 Apr
11 Jun
3-4 wk
1 May
2 Jul
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Mar
7 Jul
3-4 wk
18 Apr
28 Jul
1 wk after
22 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 Apr
8 Jul
0 wk
31 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Feb – 8 Mar
13 Jun
5-7 wk
12 Apr
18 Jul
0 wk
31 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
6 – 20 Mar
10 Jun
4-6 wk
17 Apr
8 Jul
1 wk after
17 Apr
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Feb – 8 Mar
23 Jun
5-7 wk
12 Apr
28 Jul
0 wk
5 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
20 – 27 Apr
8 Jul
3-4 wk
18 May
29 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Mar
1 Jul
3-4 wk
18 Apr
22 Jul
1 wk after
22 Apr
12 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Mar
25 Jun
4-6 wk
12 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Mar
12 Jul
3-4 wk
12 Apr
2 Aug
0 wk
5 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Mar
25 Jun
4-6 wk
12 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Mar
4 Jun
2-4 wk
31 Mar
18 Jun
2 wk before
31 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
5 Apr
18 Jun
1 wk before
5 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
15 – 22 Mar
27 Jul
3-4 wk
12 Apr
17 Aug
0 wk
25 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
9 – 23 May
4-6 wk
20 Jun
10 wk after
Garden tomato
Solanum lycopersicum
6 – 20 Mar
21 May
6-8 wk
1 May
2 Jul
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 Apr
10 Jul
2-4 wk
1 May
24 Jul
3 wk after
18 May
14 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Mar
25 Jun
4-6 wk
12 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Mar
27 Jun
3-4 wk
12 Apr
18 Jul
0 wk
5 Apr
8 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
6 – 20 Apr
16 Jun
4-6 wk
18 May
14 Jul
5 wk after
Lemon balm
Melissa officinalis
1 – 15 Feb
23 May
8-10 wk
12 Apr
18 Jul
0 wk
3 May
8 Jul
3 wk after
Dill
Anethum graveolens
5 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
15 Feb – 1 Mar
6 Jun
6-8 wk
12 Apr
18 Jul
0 wk
14 Mar
8 Jul
4 wk before
Spearmint
Mentha spicata
18 Jan – 15 Feb
23 May
8-12 wk
12 Apr
18 Jul
0 wk
3 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
12 Apr
17 Aug
0 wk
22 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
7 – 21 Feb
8 May
8-10 wk
18 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Feb
13 May
8-10 wk
12 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
15 Feb – 1 Mar
27 May
6-8 wk
12 Apr
8 Jul
0 wk
3 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
15 Feb – 1 Mar
27 May
6-8 wk
12 Apr
8 Jul
0 wk
5 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
10 Jan – 7 Feb
9 Apr
10-14 wk
18 Apr
18 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
20 – 27 Apr
23 Jun
3-4 wk
18 May
14 Jul
5 wk after
Cornflower
Centaurea cyanus
12 Apr
18 Jul
0 wk
5 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
20 Feb – 6 Mar
13 May
8-10 wk
1 May
8 Jul
3 wk after
Sweet William
Dianthus barbatus
15 Feb – 1 Mar
6-8 wk
12 Apr
0 wk
17 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Mar
27 May
6-8 wk
1 May
8 Jul
3 wk after
20 Jun
28 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
1 – 15 Mar
27 May
6-8 wk
26 Apr
8 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
8 Mar – 5 Apr
10 Jun
4-8 wk
3 May
8 Jul
3 wk after
3 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
1 – 15 Feb
8-10 wk
12 Apr
0 wk
22 Apr
1 wk after
Busy lizzie
Impatiens walleriana
23 Feb – 23 Mar
8 Jul
8-12 wk
18 May
2 Sep
5 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Mar
6 Jun
6-8 wk
1 May
18 Jul
3 wk after
Hyacinth bean
Dolichos lablab
18 Apr – 2 May
5 May
4-6 wk
30 May
2 Jun
7 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Feb
23 Apr
8-10 wk
18 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
12 Apr
3 Jul
0 wk
5 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
6 – 20 Mar
17 May
6-8 wk
1 May
28 Jun
3 wk after
20 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
24 Jan – 21 Feb
23 Apr
8-12 wk
18 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
6 Feb – 6 Mar
24 Mar
8-12 wk
1 May
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
23 Feb – 23 Mar
9 May
8-12 wk
18 May
4 Jul
5 wk after
Globe amaranth
Gomphrena globosa
23 Mar – 6 Apr
23 May
6-8 wk
18 May
4 Jul
5 wk after
Corn poppy
Papaver rhoeas
12 Apr
18 Jul
0 wk
5 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
18 Jan – 15 Feb
13 May
8-12 wk
12 Apr
8 Jul
0 wk
17 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
9 – 23 Mar
23 May
8-10 wk
18 May
18 Jul
5 wk after
Sweet pea
Lathyrus odoratus
15 Feb – 8 Mar
3 Jun
5-8 wk
12 Apr
8 Jul
0 wk
Stock
Matthiola incana
15 Feb – 1 Mar
6 Jun
6-8 wk
12 Apr
18 Jul
0 wk
22 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
15 Feb – 1 Mar
7 May
6-8 wk
12 Apr
18 Jun
0 wk
22 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
6 – 20 Apr
1 Jun
4-6 wk
18 May
29 Jun
5 wk after
Garden pansy
Viola × wittrockiana
1 – 15 Feb
23 May
8-10 wk
12 Apr
18 Jul
0 wk
17 Apr
8 Jul
1 wk after
Petunia
Petunia
6 Feb – 6 Mar
13 May
8-12 wk
1 May
8 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
21 Feb – 7 Mar
7 May
6-8 wk
18 Apr
18 Jun
1 wk after
18 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
20 Mar – 3 Apr
20 Jun
4-6 wk
1 May
18 Jul
3 wk after
Common morning glory
Ipomoea purpurea
13 – 27 Apr
23 Jun
3-5 wk
18 May
14 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
20 Mar – 3 Apr
10 Jun
4-6 wk
1 May
8 Jul
3 wk after
18 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
7 Mar – 4 Apr
8 Jun
8-12 wk
30 May
3 Aug
7 wk after
Bee balm
Monarda didyma
18 Jan – 15 Feb
23 Apr
8-12 wk
12 Apr
18 Jun
0 wk
3 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
15 Feb – 1 Mar
7 Apr
6-8 wk
12 Apr
19 May
0 wk
22 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
12 Apr
18 Jun
0 wk
5 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
15 Feb – 1 Mar
27 May
6-8 wk
12 Apr
8 Jul
0 wk
4 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
1 – 15 Mar
10 Jun
4-6 wk
12 Apr
8 Jul
0 wk
22 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
23 Feb – 9 Mar
9 Apr
10-12 wk
18 May
18 Jun
5 wk after
Sunflower
Helianthus annuus
3 – 10 Apr
17 Jun
3-4 wk
1 May
8 Jul
3 wk after
3 May
28 Jun
3 wk after
China aster
Callistephus chinensis
6 – 20 Mar
6 Jun
6-8 wk
1 May
18 Jul
3 wk after
18 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
26 Feb – 12 Mar
6 Jun
6-8 wk
23 Apr
18 Jul
2 wk after
18 May
8 Jul
5 wk after
Hollyhock
Alcea rosea
15 Feb – 1 Mar
6-8 wk
12 Apr
0 wk
22 Apr
1 wk after
Alpine delphinium
Delphinium elatum
18 Jan – 15 Feb
23 Apr
8-12 wk
12 Apr
18 Jun
0 wk
3 May
8 Jun
3 wk after
African marigold
Tagetes erecta
6 – 20 Mar
6 Jun
6-8 wk
1 May
18 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
21 Feb – 7 Mar
27 May
6-8 wk
18 Apr
8 Jul
1 wk after
18 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
1 – 15 Feb
13 Apr
8-10 wk
12 Apr
8 Jun
0 wk
3 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
9 Mar – 6 Apr
2 Jun
6-10 wk
18 May
14 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
12 Apr
18 Jul
0 wk
5 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
20 Feb – 6 Mar
13 May
8-10 wk
1 May
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
15 Feb – 1 Mar
7 May
6-8 wk
12 Apr
18 Jun
0 wk
31 Mar
8 Jun
2 wk before