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Rel. frost
Last spring frost (0°C) 16 Apr Normal year · 20 years of data
Frost-free season 198 days 16 Apr – 31 Oct

Vegetables

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