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Rel. frost
Last spring frost (0°C) 1 Apr Normal year · 20 years of data
Frost-free season 235 days 1 Apr – 22 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)
15 – 29 Mar
21 Jun
5-7 wk
3 May
26 Jul
5 wk after
26 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Mar
3 Jul
4-6 wk
21 Apr
31 Jul
3 wk after
26 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
15 Mar – 12 Apr
19 Apr
8-12 wk
7 Jun
14 Jun
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Jan
16 Jun
5-7 wk
2 Mar
21 Jul
4 wk before
19 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
10 – 17 May
1 Jul
3-4 wk
7 Jun
22 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
3 – 10 May
13 Jun
4-5 wk
7 Jun
11 Jul
10 wk after
12 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
19 – 26 May
1 Jun
3-4 wk
16 Jun
22 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
7 Jan – 4 Feb
6 Apr
8-12 wk
1 Apr
1 Jun
Vid frost
14 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Mar
21 Jun
1 wk before
26 Mar
11 Jun
1 wk before
Maize
Zea mays
29 Apr – 6 May
21 Jun
3-4 wk
27 May
12 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Apr
10 Jul
3-4 wk
3 May
31 Jul
5 wk after
14 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Jan
16 Jun
5-7 wk
2 Mar
21 Jul
4 wk before
19 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
23 Feb – 9 Mar
13 Jun
4-6 wk
6 Apr
11 Jul
1 wk after
6 Apr
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Jan
26 Jun
5-7 wk
2 Mar
31 Jul
4 wk before
26 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
10 – 17 May
15 Jul
3-4 wk
7 Jun
5 Aug
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 Apr
5 Jul
3-4 wk
3 May
26 Jul
5 wk after
14 Apr
16 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Mar
28 Jun
4-6 wk
21 Apr
26 Jul
3 wk after
Lettuce
Lactuca sativa
23 Feb – 2 Mar
15 Jul
3-4 wk
23 Mar
5 Aug
1 wk before
26 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Feb
28 Jun
4-6 wk
23 Mar
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Feb – 5 Mar
7 Jun
2-4 wk
19 Mar
21 Jun
2 wk before
19 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 Mar
21 Jun
1 wk before
26 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
12 – 19 Feb
30 Jul
3-4 wk
12 Mar
20 Aug
3 wk before
12 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 May
4-6 wk
14 Jun
11 wk after
Garden tomato
Solanum lycopersicum
1 – 15 Apr
31 May
6-8 wk
27 May
12 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
29 Apr – 13 May
17 Jul
2-4 wk
27 May
31 Jul
8 wk after
12 May
21 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Mar
28 Jun
4-6 wk
21 Apr
26 Jul
3 wk after
Garden pea
Pisum sativum
12 – 19 Feb
30 Jun
3-4 wk
12 Mar
21 Jul
3 wk before
26 Mar
11 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
26 Apr – 10 May
23 Jun
4-6 wk
7 Jun
21 Jul
10 wk after
Lemon balm
Melissa officinalis
21 Jan – 4 Feb
26 May
8-10 wk
1 Apr
21 Jul
Vid frost
27 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
26 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Jan
9 Jun
6-8 wk
2 Mar
21 Jul
4 wk before
26 Mar
11 Jul
1 wk before
Spearmint
Mentha spicata
18 Dec – 15 Jan
26 May
8-12 wk
12 Mar
21 Jul
3 wk before
27 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
14 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
22 Feb – 8 Mar
11 May
8-10 wk
3 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
10 – 24 Feb
16 May
8-10 wk
21 Apr
11 Jul
3 wk after
Oregano
Origanum vulgare
13 – 27 Feb
30 May
6-8 wk
10 Apr
11 Jul
1 wk after
27 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
15 – 29 Jan
30 May
6-8 wk
12 Mar
11 Jul
3 wk before
26 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
25 Jan – 22 Feb
12 Apr
10-14 wk
3 May
21 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
10 – 17 May
30 Jun
3-4 wk
7 Jun
21 Jul
10 wk after
Cornflower
Centaurea cyanus
12 Mar
21 Jul
3 wk before
26 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
18 Mar – 1 Apr
16 May
8-10 wk
27 May
11 Jul
8 wk after
Sweet William
Dianthus barbatus
15 – 29 Jan
6-8 wk
12 Mar
3 wk before
6 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
1 – 15 Apr
30 May
6-8 wk
27 May
11 Jul
8 wk after
14 Jun
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
25 Mar – 8 Apr
30 May
6-8 wk
20 May
11 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
2 – 30 Mar
13 Jun
4-8 wk
27 Apr
11 Jul
4 wk after
27 Apr
1 Jul
4 wk after
Foxglove
Digitalis purpurea
1 – 15 Jan
8-10 wk
12 Mar
3 wk before
14 Apr
2 wk after
Busy lizzie
Impatiens walleriana
15 Mar – 12 Apr
11 Jul
8-12 wk
7 Jun
5 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
1 – 15 Apr
9 Jun
6-8 wk
27 May
21 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
26 Apr – 10 May
24 May
4-6 wk
7 Jun
21 Jun
10 wk after
Chinese lantern
Physalis alkekengi
22 Feb – 8 Mar
26 Apr
8-10 wk
3 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
26 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
8 wk after
14 Jun
21 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
8 Feb – 8 Mar
26 Apr
8-12 wk
3 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
4 Mar – 1 Apr
27 Mar
8-12 wk
27 May
8 wk after
Regal-foxtail
Ptilotus nobilis
15 Mar – 12 Apr
16 May
8-12 wk
7 Jun
11 Jul
10 wk after
Globe amaranth
Gomphrena globosa
12 – 26 Apr
30 May
6-8 wk
7 Jun
11 Jul
10 wk after
Corn poppy
Papaver rhoeas
26 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
29 Dec – 26 Jan
16 May
8-12 wk
23 Mar
11 Jul
1 wk before
6 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
29 Mar – 12 Apr
26 May
8-10 wk
7 Jun
21 Jul
10 wk after
Sweet pea
Lathyrus odoratus
15 Jan – 5 Feb
6 Jun
5-8 wk
12 Mar
11 Jul
3 wk before
Stock
Matthiola incana
26 Jan – 9 Feb
9 Jun
6-8 wk
23 Mar
21 Jul
1 wk before
14 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
15 – 29 Jan
10 May
6-8 wk
12 Mar
21 Jun
3 wk before
14 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
26 Apr – 10 May
8 Jun
4-6 wk
7 Jun
6 Jul
10 wk after
Garden pansy
Viola × wittrockiana
22 Dec – 5 Jan
26 May
8-10 wk
2 Mar
21 Jul
4 wk before
6 Apr
11 Jul
1 wk after
Petunia
Petunia
4 Mar – 1 Apr
16 May
8-12 wk
27 May
11 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Mar
10 May
6-8 wk
3 May
21 Jun
5 wk after
12 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
15 – 29 Apr
23 Jun
4-6 wk
27 May
21 Jul
8 wk after
Common morning glory
Ipomoea purpurea
3 – 17 May
30 Jun
3-5 wk
7 Jun
21 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
15 – 29 Apr
13 Jun
4-6 wk
27 May
11 Jul
8 wk after
12 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
22 Mar – 19 Apr
15 Jun
8-12 wk
14 Jun
10 Aug
11 wk after
Bee balm
Monarda didyma
7 Jan – 4 Feb
26 Apr
8-12 wk
1 Apr
21 Jun
Vid frost
27 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
15 – 29 Jan
10 Apr
6-8 wk
12 Mar
22 May
3 wk before
14 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
12 Mar
21 Jun
3 wk before
26 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
5 – 19 Jan
30 May
6-8 wk
2 Mar
11 Jul
4 wk before
19 Mar
1 Jul
2 wk before
Bishop's flower
Ammi majus
5 – 19 Mar
13 Jun
4-6 wk
16 Apr
11 Jul
2 wk after
14 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
15 – 29 Mar
12 Apr
10-12 wk
7 Jun
21 Jun
10 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
20 Jun
3-4 wk
27 May
11 Jul
8 wk after
27 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
1 – 15 Apr
9 Jun
6-8 wk
27 May
21 Jul
8 wk after
12 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
17 – 31 Mar
9 Jun
6-8 wk
12 May
21 Jul
6 wk after
12 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
15 – 29 Jan
6-8 wk
12 Mar
3 wk before
14 Apr
2 wk after
Alpine delphinium
Delphinium elatum
27 Jan – 24 Feb
26 Apr
8-12 wk
21 Apr
21 Jun
3 wk after
27 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
1 – 15 Apr
9 Jun
6-8 wk
27 May
21 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Mar
30 May
6-8 wk
3 May
11 Jul
5 wk after
12 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
30 Jan – 13 Feb
16 Apr
8-10 wk
10 Apr
11 Jun
1 wk after
27 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
29 Mar – 26 Apr
9 Jun
6-10 wk
7 Jun
21 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
26 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
16 May
8-10 wk
27 May
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Jan
10 May
6-8 wk
12 Mar
21 Jun
3 wk before
14 Apr
11 Jun
2 wk after