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Rel. frost
Last spring frost (0°C) 4 Apr Normal year · 20 years of data
Frost-free season 230 days 4 Apr – 20 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)
18 Mar – 1 Apr
22 Jun
5-7 wk
6 May
27 Jul
5 wk after
29 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Mar
4 Jul
4-6 wk
24 Apr
1 Aug
3 wk after
29 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
18 Mar – 15 Apr
17 Apr
8-12 wk
10 Jun
12 Jun
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 – 29 Jan
17 Jun
5-7 wk
5 Mar
22 Jul
4 wk before
22 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
13 – 20 May
28 Jun
3-4 wk
10 Jun
19 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 May
14 Jun
4-5 wk
10 Jun
12 Jul
10 wk after
15 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
22 – 29 May
29 May
3-4 wk
19 Jun
19 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Jan – 7 Feb
7 Apr
8-12 wk
4 Apr
2 Jun
Vid frost
17 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Mar
22 Jun
1 wk before
29 Mar
12 Jun
1 wk before
Maize
Zea mays
2 – 9 May
18 Jun
3-4 wk
30 May
9 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 Apr
11 Jul
3-4 wk
6 May
1 Aug
5 wk after
17 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 – 29 Jan
17 Jun
5-7 wk
5 Mar
22 Jul
4 wk before
22 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
26 Feb – 12 Mar
14 Jun
4-6 wk
9 Apr
12 Jul
1 wk after
9 Apr
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 – 29 Jan
27 Jun
5-7 wk
5 Mar
1 Aug
4 wk before
29 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
13 – 20 May
16 Jul
3-4 wk
10 Jun
6 Aug
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 Apr
4 Jul
3-4 wk
6 May
25 Jul
5 wk after
17 Apr
15 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Mar
29 Jun
4-6 wk
24 Apr
27 Jul
3 wk after
Lettuce
Lactuca sativa
26 Feb – 5 Mar
16 Jul
3-4 wk
26 Mar
6 Aug
1 wk before
29 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Feb
29 Jun
4-6 wk
26 Mar
27 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
22 Feb – 8 Mar
8 Jun
2-4 wk
22 Mar
22 Jun
2 wk before
22 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Mar
22 Jun
1 wk before
29 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
15 – 22 Feb
31 Jul
3-4 wk
15 Mar
21 Aug
3 wk before
15 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 May
4-6 wk
17 Jun
11 wk after
Garden tomato
Solanum lycopersicum
4 – 18 Apr
28 May
6-8 wk
30 May
9 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
18 Jul
2-4 wk
30 May
1 Aug
8 wk after
15 May
22 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Mar
29 Jun
4-6 wk
24 Apr
27 Jul
3 wk after
Garden pea
Pisum sativum
15 – 22 Feb
1 Jul
3-4 wk
15 Mar
22 Jul
3 wk before
29 Mar
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
29 Apr – 13 May
24 Jun
4-6 wk
10 Jun
22 Jul
10 wk after
Lemon balm
Melissa officinalis
24 Jan – 7 Feb
27 May
8-10 wk
4 Apr
22 Jul
Vid frost
30 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
29 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
8 – 22 Jan
10 Jun
6-8 wk
5 Mar
22 Jul
4 wk before
29 Mar
12 Jul
1 wk before
Spearmint
Mentha spicata
21 Dec – 18 Jan
27 May
8-12 wk
15 Mar
22 Jul
3 wk before
30 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
17 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
25 Feb – 11 Mar
12 May
8-10 wk
6 May
7 Jul
5 wk after
Common thyme
Thymus vulgaris
13 – 27 Feb
17 May
8-10 wk
24 Apr
12 Jul
3 wk after
Oregano
Origanum vulgare
16 Feb – 2 Mar
31 May
6-8 wk
13 Apr
12 Jul
1 wk after
30 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
18 Jan – 1 Feb
31 May
6-8 wk
15 Mar
12 Jul
3 wk before
29 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
28 Jan – 25 Feb
13 Apr
10-14 wk
6 May
22 Jun
5 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
13 – 20 May
1 Jul
3-4 wk
10 Jun
22 Jul
10 wk after
Cornflower
Centaurea cyanus
15 Mar
22 Jul
3 wk before
29 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
21 Mar – 4 Apr
17 May
8-10 wk
30 May
12 Jul
8 wk after
Sweet William
Dianthus barbatus
18 Jan – 1 Feb
6-8 wk
15 Mar
3 wk before
9 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
31 May
6-8 wk
30 May
12 Jul
8 wk after
17 Jun
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
28 Mar – 11 Apr
31 May
6-8 wk
23 May
12 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
5 Mar – 2 Apr
14 Jun
4-8 wk
30 Apr
12 Jul
4 wk after
30 Apr
2 Jul
4 wk after
Foxglove
Digitalis purpurea
4 – 18 Jan
8-10 wk
15 Mar
3 wk before
17 Apr
2 wk after
Busy lizzie
Impatiens walleriana
18 Mar – 15 Apr
12 Jul
8-12 wk
10 Jun
6 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
10 Jun
6-8 wk
30 May
22 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
29 Apr – 13 May
25 May
4-6 wk
10 Jun
22 Jun
10 wk after
Chinese lantern
Physalis alkekengi
25 Feb – 11 Mar
27 Apr
8-10 wk
6 May
22 Jun
5 wk after
Love in a mist
Nigella damascena
29 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
4 – 18 Apr
21 May
6-8 wk
30 May
2 Jul
8 wk after
17 Jun
22 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
11 Feb – 11 Mar
27 Apr
8-12 wk
6 May
22 Jun
5 wk after
Cardoon
Cynara cardunculus
7 Mar – 4 Apr
28 Mar
8-12 wk
30 May
8 wk after
Regal-foxtail
Ptilotus nobilis
18 Mar – 15 Apr
17 May
8-12 wk
10 Jun
12 Jul
10 wk after
Globe amaranth
Gomphrena globosa
15 – 29 Apr
31 May
6-8 wk
10 Jun
12 Jul
10 wk after
Corn poppy
Papaver rhoeas
29 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Jan
17 May
8-12 wk
26 Mar
12 Jul
1 wk before
9 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
1 – 15 Apr
27 May
8-10 wk
10 Jun
22 Jul
10 wk after
Sweet pea
Lathyrus odoratus
18 Jan – 8 Feb
7 Jun
5-8 wk
15 Mar
12 Jul
3 wk before
Stock
Matthiola incana
29 Jan – 12 Feb
10 Jun
6-8 wk
26 Mar
22 Jul
1 wk before
17 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
18 Jan – 1 Feb
11 May
6-8 wk
15 Mar
22 Jun
3 wk before
17 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
29 Apr – 13 May
9 Jun
4-6 wk
10 Jun
7 Jul
10 wk after
Garden pansy
Viola × wittrockiana
25 Dec – 8 Jan
27 May
8-10 wk
5 Mar
22 Jul
4 wk before
9 Apr
12 Jul
1 wk after
Petunia
Petunia
7 Mar – 4 Apr
17 May
8-12 wk
30 May
12 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
11 – 25 Mar
11 May
6-8 wk
6 May
22 Jun
5 wk after
15 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
24 Jun
4-6 wk
30 May
22 Jul
8 wk after
Common morning glory
Ipomoea purpurea
6 – 20 May
1 Jul
3-5 wk
10 Jun
22 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
14 Jun
4-6 wk
30 May
12 Jul
8 wk after
15 May
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
25 Mar – 22 Apr
16 Jun
8-12 wk
17 Jun
11 Aug
11 wk after
Bee balm
Monarda didyma
10 Jan – 7 Feb
27 Apr
8-12 wk
4 Apr
22 Jun
Vid frost
30 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
18 Jan – 1 Feb
11 Apr
6-8 wk
15 Mar
23 May
3 wk before
17 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
15 Mar
22 Jun
3 wk before
29 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
8 – 22 Jan
31 May
6-8 wk
5 Mar
12 Jul
4 wk before
22 Mar
2 Jul
2 wk before
Bishop's flower
Ammi majus
8 – 22 Mar
14 Jun
4-6 wk
19 Apr
12 Jul
2 wk after
17 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
18 Mar – 1 Apr
13 Apr
10-12 wk
10 Jun
22 Jun
10 wk after
Sunflower
Helianthus annuus
2 – 9 May
21 Jun
3-4 wk
30 May
12 Jul
8 wk after
30 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
4 – 18 Apr
10 Jun
6-8 wk
30 May
22 Jul
8 wk after
15 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
20 Mar – 3 Apr
10 Jun
6-8 wk
15 May
22 Jul
6 wk after
15 May
12 Jul
6 wk after
Hollyhock
Alcea rosea
18 Jan – 1 Feb
6-8 wk
15 Mar
3 wk before
17 Apr
2 wk after
Alpine delphinium
Delphinium elatum
30 Jan – 27 Feb
27 Apr
8-12 wk
24 Apr
22 Jun
3 wk after
30 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
4 – 18 Apr
10 Jun
6-8 wk
30 May
22 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Mar
31 May
6-8 wk
6 May
12 Jul
5 wk after
15 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
2 – 16 Feb
17 Apr
8-10 wk
13 Apr
12 Jun
1 wk after
30 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
1 – 29 Apr
10 Jun
6-10 wk
10 Jun
22 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
29 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
17 May
8-10 wk
30 May
12 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
18 Jan – 1 Feb
11 May
6-8 wk
15 Mar
22 Jun
3 wk before
17 Apr
12 Jun
2 wk after