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Rel. frost
Last spring frost (0°C) 26 Apr Normal year · 20 years of data
Frost-free season 175 days 26 Apr – 18 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)
6 – 20 Apr
18 Jun
5-7 wk
25 May
23 Jul
4 wk after
19 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
30 Jun
4-6 wk
10 May
28 Jul
2 wk after
19 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
28 Mar – 25 Apr
14 Apr
8-12 wk
20 Jun
8 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Feb
13 Jun
5-7 wk
1 Apr
18 Jul
4 wk before
14 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
23 – 30 May
13 Jun
3-4 wk
20 Jun
4 Jul
8 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 May
10 Jun
4-5 wk
20 Jun
8 Jul
8 wk after
1 Jun
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
28 May – 4 Jun
29 May
3-4 wk
25 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
1 Feb – 1 Mar
3 Apr
8-12 wk
26 Apr
29 May
Vid frost
6 May
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Apr
18 Jun
1 wk before
19 Apr
8 Jun
1 wk before
Maize
Zea mays
15 – 22 May
3 Jun
3-4 wk
12 Jun
24 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Apr – 4 May
7 Jul
3-4 wk
25 May
28 Jul
4 wk after
6 May
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Feb
13 Jun
5-7 wk
1 Apr
18 Jul
4 wk before
14 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
20 Mar – 3 Apr
10 Jun
4-6 wk
1 May
8 Jul
1 wk after
1 May
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Feb
23 Jun
5-7 wk
1 Apr
28 Jul
4 wk before
19 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
23 – 30 May
3 Jul
3-4 wk
20 Jun
24 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
27 Apr – 4 May
25 Jun
3-4 wk
25 May
16 Jul
4 wk after
6 May
6 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
2 wk after
Lettuce
Lactuca sativa
22 – 29 Mar
12 Jul
3-4 wk
19 Apr
2 Aug
1 wk before
19 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Mar
25 Jun
4-6 wk
19 Apr
23 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 – 31 Mar
4 Jun
2-4 wk
14 Apr
18 Jun
2 wk before
14 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 Apr
18 Jun
1 wk before
19 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
14 – 21 Mar
27 Jul
3-4 wk
11 Apr
17 Aug
2 wk before
8 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
23 May – 6 Jun
4-6 wk
4 Jul
10 wk after
Garden tomato
Solanum lycopersicum
17 Apr – 1 May
13 May
6-8 wk
12 Jun
24 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
15 – 29 May
5 Jul
2-4 wk
12 Jun
19 Jul
7 wk after
1 Jun
9 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
2 wk after
Garden pea
Pisum sativum
14 – 21 Mar
27 Jun
3-4 wk
11 Apr
18 Jul
2 wk before
19 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
9 – 23 May
11 Jun
4-6 wk
20 Jun
9 Jul
8 wk after
Lemon balm
Melissa officinalis
15 Feb – 1 Mar
23 May
8-10 wk
26 Apr
18 Jul
Vid frost
17 May
8 Jul
3 wk after
Dill
Anethum graveolens
19 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
4 – 18 Feb
6 Jun
6-8 wk
1 Apr
18 Jul
4 wk before
19 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
17 Jan – 14 Feb
23 May
8-12 wk
11 Apr
18 Jul
2 wk before
17 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
6 May
7 Aug
1 wk after
Garden sage
Salvia officinalis
16 – 30 Mar
8 May
8-10 wk
25 May
3 Jul
4 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
13 May
8-10 wk
10 May
8 Jul
2 wk after
Oregano
Origanum vulgare
7 – 21 Mar
27 May
6-8 wk
2 May
8 Jul
1 wk after
17 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
14 – 28 Feb
27 May
6-8 wk
11 Apr
8 Jul
2 wk before
19 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
16 Feb – 16 Mar
9 Apr
10-14 wk
25 May
18 Jun
4 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
23 – 30 May
18 Jun
3-4 wk
20 Jun
9 Jul
8 wk after
Cornflower
Centaurea cyanus
11 Apr
18 Jul
2 wk before
19 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Apr
13 May
8-10 wk
12 Jun
8 Jul
7 wk after
Sweet William
Dianthus barbatus
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
1 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 Apr – 1 May
27 May
6-8 wk
12 Jun
8 Jul
7 wk after
4 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Apr
27 May
6-8 wk
6 Jun
8 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Mar – 19 Apr
10 Jun
4-8 wk
17 May
8 Jul
3 wk after
17 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
31 Jan – 14 Feb
8-10 wk
11 Apr
2 wk before
6 May
1 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
7 Jul
8-12 wk
20 Jun
1 Sep
8 wk after
Creeping zinnia
Sanvitalia procumbens
17 Apr – 1 May
6 Jun
6-8 wk
12 Jun
18 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Fleece
9 – 23 May
12 May
4-6 wk
20 Jun
8 wk after
Chinese lantern
Physalis alkekengi
16 – 30 Mar
23 Apr
8-10 wk
25 May
18 Jun
4 wk after
Love in a mist
Nigella damascena
19 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 Apr – 1 May
17 May
6-8 wk
12 Jun
28 Jun
7 wk after
4 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
2 – 30 Mar
23 Apr
8-12 wk
25 May
18 Jun
4 wk after
Cardoon
Cynara cardunculus
20 Mar – 17 Apr
24 Mar
8-12 wk
12 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
28 Mar – 25 Apr
4 May
8-12 wk
20 Jun
29 Jun
8 wk after
Globe amaranth
Gomphrena globosa
25 Apr – 9 May
18 May
6-8 wk
20 Jun
29 Jun
8 wk after
Corn poppy
Papaver rhoeas
19 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
25 Jan – 22 Feb
13 May
8-12 wk
19 Apr
8 Jul
1 wk before
1 May
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
11 – 25 Apr
23 May
8-10 wk
20 Jun
18 Jul
8 wk after
Sweet pea
Lathyrus odoratus
14 Feb – 7 Mar
3 Jun
5-8 wk
11 Apr
8 Jul
2 wk before
Stock
Matthiola incana
22 Feb – 8 Mar
6 Jun
6-8 wk
19 Apr
18 Jul
1 wk before
6 May
8 Jul
1 wk after
Wormwood
Artemisia absinthium
14 – 28 Feb
7 May
6-8 wk
11 Apr
18 Jun
2 wk before
6 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
9 – 23 May
27 May
4-6 wk
20 Jun
24 Jun
8 wk after
Garden pansy
Viola × wittrockiana
21 Jan – 4 Feb
23 May
8-10 wk
1 Apr
18 Jul
4 wk before
1 May
8 Jul
1 wk after
Petunia
Petunia
20 Mar – 17 Apr
13 May
8-12 wk
12 Jun
8 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
30 Mar – 13 Apr
7 May
6-8 wk
25 May
18 Jun
4 wk after
1 Jun
8 Jun
5 wk after
Common zinnia
Zinnia elegans
1 – 15 May
19 Jun
4-6 wk
12 Jun
17 Jul
7 wk after
Common morning glory
Ipomoea purpurea
16 – 30 May
18 Jun
3-5 wk
20 Jun
9 Jul
8 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 May
10 Jun
4-6 wk
12 Jun
8 Jul
7 wk after
1 Jun
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
1 – 29 Apr
3 Jun
8-12 wk
24 Jun
29 Jul
8 wk after
Bee balm
Monarda didyma
1 Feb – 1 Mar
23 Apr
8-12 wk
26 Apr
18 Jun
Vid frost
17 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
14 – 28 Feb
7 Apr
6-8 wk
11 Apr
19 May
2 wk before
6 May
9 May
1 wk after
Safflower
Carthamus tinctorius
11 Apr
18 Jun
2 wk before
19 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
4 – 18 Feb
27 May
6-8 wk
1 Apr
8 Jul
4 wk before
14 Apr
28 Jun
2 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
10 Jun
4-6 wk
6 May
8 Jul
1 wk after
6 May
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
28 Mar – 11 Apr
8 Apr
10-12 wk
20 Jun
8 wk after
Sunflower
Helianthus annuus
15 – 22 May
17 Jun
3-4 wk
12 Jun
8 Jul
7 wk after
17 May
28 Jun
3 wk after
China aster
Callistephus chinensis
17 Apr – 1 May
6 Jun
6-8 wk
12 Jun
18 Jul
7 wk after
1 Jun
8 Jul
5 wk after
Annual phlox
Phlox drummondii
5 – 19 Apr
6 Jun
6-8 wk
31 May
18 Jul
5 wk after
1 Jun
8 Jul
5 wk after
Hollyhock
Alcea rosea
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
6 May
1 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
23 Apr
8-12 wk
10 May
18 Jun
2 wk after
17 May
8 Jun
3 wk after
African marigold
Tagetes erecta
17 Apr – 1 May
6 Jun
6-8 wk
12 Jun
18 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
30 Mar – 13 Apr
27 May
6-8 wk
25 May
8 Jul
4 wk after
1 Jun
28 Jun
5 wk after
Wood sage
Salvia nemorosa
21 Feb – 7 Mar
13 Apr
8-10 wk
2 May
8 Jun
1 wk after
17 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
11 Apr – 9 May
28 May
6-10 wk
20 Jun
9 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
19 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 Apr
13 May
8-10 wk
12 Jun
8 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Feb
7 May
6-8 wk
11 Apr
18 Jun
2 wk before
6 May
8 Jun
1 wk after