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Rel. frost
Last spring frost (0°C) 27 Apr Normal year · 20 years of data
Frost-free season 199 days 27 Apr – 12 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)
9 – 23 Mar
17 Jun
5-7 wk
27 Apr
22 Jul
0 wk
20 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Mar
29 Jun
4-6 wk
27 Apr
27 Jul
0 wk
20 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
10 Mar – 7 Apr
6 Apr
8-12 wk
2 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Mar
12 Jun
5-7 wk
27 Apr
17 Jul
0 wk
15 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
5 – 12 May
16 Jun
3-4 wk
2 Jun
7 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
28 Apr – 5 May
9 Jun
4-5 wk
2 Jun
7 Jul
5 wk after
2 Jun
27 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
26 May – 2 Jun
2 Jun
3-4 wk
23 Jun
23 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
2 Feb – 2 Mar
2 Apr
8-12 wk
27 Apr
28 May
0 wk
7 May
18 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 Apr
17 Jun
1 wk before
20 Apr
7 Jun
1 wk before
Maize
Zea mays
18 – 25 Apr
6 Jun
3-4 wk
16 May
27 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Apr
6 Jul
3-4 wk
3 May
27 Jul
1 wk after
7 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Apr
7 Jul
0 wk
15 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Mar
12 Jun
5-7 wk
27 Apr
17 Jul
0 wk
15 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
21 Mar – 4 Apr
9 Jun
4-6 wk
2 May
7 Jul
1 wk after
2 May
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Mar
22 Jun
5-7 wk
27 Apr
27 Jul
0 wk
20 Apr
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 May
7 Jul
3-4 wk
2 Jun
28 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 Apr
23 Jun
3-4 wk
3 May
14 Jul
1 wk after
7 May
4 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Mar
24 Jun
4-6 wk
27 Apr
22 Jul
0 wk
Lettuce
Lactuca sativa
30 Mar – 6 Apr
11 Jul
3-4 wk
27 Apr
1 Aug
0 wk
20 Apr
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Mar
24 Jun
4-6 wk
27 Apr
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Mar – 1 Apr
3 Jun
2-4 wk
15 Apr
17 Jun
2 wk before
15 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 Apr
17 Jun
1 wk before
20 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
30 Mar – 6 Apr
26 Jul
3-4 wk
27 Apr
16 Aug
0 wk
9 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
24 May – 7 Jun
4-6 wk
5 Jul
10 wk after
Garden tomato
Solanum lycopersicum
21 Mar – 4 Apr
16 May
6-8 wk
16 May
27 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
18 Apr – 2 May
9 Jul
2-4 wk
16 May
23 Jul
3 wk after
2 Jun
13 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Mar
24 Jun
4-6 wk
27 Apr
22 Jul
0 wk
Garden pea
Pisum sativum
30 Mar – 6 Apr
26 Jun
3-4 wk
27 Apr
17 Jul
0 wk
20 Apr
7 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 Apr – 5 May
15 Jun
4-6 wk
2 Jun
13 Jul
5 wk after
Lemon balm
Melissa officinalis
16 Feb – 2 Mar
22 May
8-10 wk
27 Apr
17 Jul
0 wk
18 May
7 Jul
3 wk after
Dill
Anethum graveolens
20 Apr
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
2 – 16 Mar
5 Jun
6-8 wk
27 Apr
17 Jul
0 wk
20 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
2 Feb – 2 Mar
22 May
8-12 wk
27 Apr
17 Jul
0 wk
18 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
27 Apr
16 Aug
0 wk
7 May
6 Aug
1 wk after
Garden sage
Salvia officinalis
22 Feb – 8 Mar
7 May
8-10 wk
3 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
16 Feb – 2 Mar
12 May
8-10 wk
27 Apr
7 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Mar
26 May
6-8 wk
27 Apr
7 Jul
0 wk
18 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
2 – 16 Mar
26 May
6-8 wk
27 Apr
7 Jul
0 wk
20 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
25 Jan – 22 Feb
8 Apr
10-14 wk
3 May
17 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
5 – 12 May
22 Jun
3-4 wk
2 Jun
13 Jul
5 wk after
Cornflower
Centaurea cyanus
27 Apr
17 Jul
0 wk
20 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
7 – 21 Mar
12 May
8-10 wk
16 May
7 Jul
3 wk after
Sweet William
Dianthus barbatus
2 – 16 Mar
6-8 wk
27 Apr
0 wk
2 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
21 Mar – 4 Apr
26 May
6-8 wk
16 May
7 Jul
3 wk after
5 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Mar
26 May
6-8 wk
11 May
7 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
23 Mar – 20 Apr
9 Jun
4-8 wk
18 May
7 Jul
3 wk after
18 May
27 Jun
3 wk after
Foxglove
Digitalis purpurea
16 Feb – 2 Mar
8-10 wk
27 Apr
0 wk
7 May
1 wk after
Busy lizzie
Impatiens walleriana
10 Mar – 7 Apr
7 Jul
8-12 wk
2 Jun
1 Sep
5 wk after
Creeping zinnia
Sanvitalia procumbens
21 Mar – 4 Apr
5 Jun
6-8 wk
16 May
17 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
21 Apr – 5 May
16 May
4-6 wk
2 Jun
13 Jun
5 wk after
Chinese lantern
Physalis alkekengi
22 Feb – 8 Mar
22 Apr
8-10 wk
3 May
17 Jun
1 wk after
Love in a mist
Nigella damascena
27 Apr
2 Jul
0 wk
20 Apr
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
21 Mar – 4 Apr
16 May
6-8 wk
16 May
27 Jun
3 wk after
5 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
8 Feb – 8 Mar
22 Apr
8-12 wk
3 May
17 Jun
1 wk after
Cardoon
Cynara cardunculus
21 Feb – 21 Mar
23 Mar
8-12 wk
16 May
18 May
3 wk after
Regal-foxtail
Ptilotus nobilis
10 Mar – 7 Apr
8 May
8-12 wk
2 Jun
3 Jul
5 wk after
Globe amaranth
Gomphrena globosa
7 – 21 Apr
22 May
6-8 wk
2 Jun
3 Jul
5 wk after
Corn poppy
Papaver rhoeas
27 Apr
17 Jul
0 wk
20 Apr
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
2 Feb – 2 Mar
12 May
8-12 wk
27 Apr
7 Jul
0 wk
2 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
24 Mar – 7 Apr
22 May
8-10 wk
2 Jun
17 Jul
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Mar
2 Jun
5-8 wk
27 Apr
7 Jul
0 wk
Stock
Matthiola incana
2 – 16 Mar
5 Jun
6-8 wk
27 Apr
17 Jul
0 wk
7 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
2 – 16 Mar
6 May
6-8 wk
27 Apr
17 Jun
0 wk
7 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
21 Apr – 5 May
31 May
4-6 wk
2 Jun
28 Jun
5 wk after
Garden pansy
Viola × wittrockiana
16 Feb – 2 Mar
22 May
8-10 wk
27 Apr
17 Jul
0 wk
2 May
7 Jul
1 wk after
Petunia
Petunia
21 Feb – 21 Mar
12 May
8-12 wk
16 May
7 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Mar
6 May
6-8 wk
3 May
17 Jun
1 wk after
2 Jun
7 Jun
5 wk after
Common zinnia
Zinnia elegans
4 – 18 Apr
19 Jun
4-6 wk
16 May
17 Jul
3 wk after
Common morning glory
Ipomoea purpurea
28 Apr – 12 May
22 Jun
3-5 wk
2 Jun
13 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
4 – 18 Apr
9 Jun
4-6 wk
16 May
7 Jul
3 wk after
2 Jun
27 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
22 Mar – 19 Apr
7 Jun
8-12 wk
14 Jun
2 Aug
7 wk after
Bee balm
Monarda didyma
2 Feb – 2 Mar
22 Apr
8-12 wk
27 Apr
17 Jun
0 wk
18 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
2 – 16 Mar
6 Apr
6-8 wk
27 Apr
18 May
0 wk
7 May
8 May
1 wk after
Safflower
Carthamus tinctorius
27 Apr
17 Jun
0 wk
20 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Mar
26 May
6-8 wk
27 Apr
7 Jul
0 wk
19 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
16 – 30 Mar
9 Jun
4-6 wk
27 Apr
7 Jul
0 wk
7 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
10 – 24 Mar
8 Apr
10-12 wk
2 Jun
17 Jun
5 wk after
Sunflower
Helianthus annuus
18 – 25 Apr
16 Jun
3-4 wk
16 May
7 Jul
3 wk after
18 May
27 Jun
3 wk after
China aster
Callistephus chinensis
21 Mar – 4 Apr
5 Jun
6-8 wk
16 May
17 Jul
3 wk after
2 Jun
7 Jul
5 wk after
Annual phlox
Phlox drummondii
13 – 27 Mar
5 Jun
6-8 wk
8 May
17 Jul
2 wk after
2 Jun
7 Jul
5 wk after
Hollyhock
Alcea rosea
2 – 16 Mar
6-8 wk
27 Apr
0 wk
7 May
1 wk after
Alpine delphinium
Delphinium elatum
2 Feb – 2 Mar
22 Apr
8-12 wk
27 Apr
17 Jun
0 wk
18 May
7 Jun
3 wk after
African marigold
Tagetes erecta
21 Mar – 4 Apr
5 Jun
6-8 wk
16 May
17 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Mar
26 May
6-8 wk
3 May
7 Jul
1 wk after
2 Jun
27 Jun
5 wk after
Wood sage
Salvia nemorosa
16 Feb – 2 Mar
12 Apr
8-10 wk
27 Apr
7 Jun
0 wk
18 May
28 May
3 wk after
Black-eyed susan vine
Thunbergia alata
24 Mar – 21 Apr
1 Jun
6-10 wk
2 Jun
13 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
27 Apr
17 Jul
0 wk
20 Apr
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
7 – 21 Mar
12 May
8-10 wk
16 May
7 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Mar
6 May
6-8 wk
27 Apr
17 Jun
0 wk
7 May
7 Jun
1 wk after