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Rel. frost
Last spring frost (0°C) 22 Mar Normal year · 20 years of data
Frost-free season 248 days 22 Mar – 25 Nov

Vegetables

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
5 – 19 Mar
5-7 wk
23 Apr
5 wk after
16 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
28 Feb – 14 Mar
4-6 wk
11 Apr
3 wk after
16 Mar
1 wk before
Chili pepper
Capsicum annuum
5 Mar – 2 Apr
8-12 wk
28 May
10 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
9 Mar
2 wk before
Cucumber
Cucumis sativus
30 Apr – 7 May
3-4 wk
28 May
10 wk after
Florence Fennel
Foeniculum vulgare
23 – 30 Apr
4-5 wk
28 May
10 wk after
2 May
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
4 – 11 Apr
3-4 wk
2 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Dec – 25 Jan
8-12 wk
22 Mar
Vid frost
4 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 Apr
2 wk after
4 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
9 – 16 Apr
3-4 wk
7 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
26 Mar – 2 Apr
3-4 wk
23 Apr
5 wk after
4 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
9 Mar
2 wk before
Potato
Solanum tuberosum
13 – 27 Feb
4-6 wk
27 Mar
1 wk after
27 Mar
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
16 Mar
1 wk before
Pumpkin
Cucurbita pepo
30 Apr – 7 May
3-4 wk
28 May
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Mar – 2 Apr
3-4 wk
23 Apr
5 wk after
4 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Feb – 14 Mar
4-6 wk
11 Apr
3 wk after
Lettuce
Lactuca sativa
13 – 20 Feb
3-4 wk
13 Mar
1 wk before
16 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
30 Jan – 13 Feb
4-6 wk
13 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Feb
2-4 wk
9 Mar
2 wk before
9 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 Mar
1 wk before
16 Mar
1 wk before
Spinach
Spinacia oleracea
2 – 9 Feb
3-4 wk
2 Mar
3 wk before
2 Mar
3 wk before
Sweet potato
Ipomoea batatas
23 Apr – 7 May
4-6 wk
4 Jun
11 wk after
Tomato
Solanum lycopersicum
22 Mar – 5 Apr
6-8 wk
17 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
19 Apr – 3 May
2-4 wk
17 May
8 wk after
2 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Feb – 14 Mar
4-6 wk
11 Apr
3 wk after
Pea
Pisum sativum
2 – 9 Feb
3-4 wk
2 Mar
3 wk before
16 Mar
1 wk before
Current date Soon Date passed

Herbs

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Basil
Ocimum basilicum
Fleece
26 Mar – 9 Apr
4-6 wk
7 May
7 wk after
Lemon balm
Melissa officinalis
11 – 25 Jan
8-10 wk
22 Mar
Vid frost
17 Apr
4 wk after
Dill
Anethum graveolens
16 Mar
1 wk before
Chives
Allium schoenoprasum
26 Dec – 9 Jan
6-8 wk
20 Feb
4 wk before
16 Mar
1 wk before
Spearmint
Mentha spicata
8 Dec – 5 Jan
8-12 wk
2 Mar
3 wk before
17 Apr
4 wk after
Coriander
Coriandrum sativum
4 Apr
2 wk after
Sage
Salvia officinalis
12 – 26 Feb
8-10 wk
23 Apr
5 wk after
Thyme
Thymus vulgaris
31 Jan – 14 Feb
8-10 wk
11 Apr
3 wk after
Oregano
Origanum vulgare
3 – 17 Feb
6-8 wk
31 Mar
1 wk after
17 Apr
4 wk after
Parsley
Petroselinum crispum
5 – 19 Jan
6-8 wk
2 Mar
3 wk before
16 Mar
1 wk before
Rosemary
Salvia rosmarinus
15 Jan – 12 Feb
10-14 wk
23 Apr
5 wk after
Current date Soon Date passed

Annual flowers

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Morning glory
Ipomoea tricolor
Fleece
30 Apr – 7 May
3-4 wk
28 May
10 wk after
Cornflower
Centaurea cyanus
2 Mar
3 wk before
16 Mar
1 wk before
Statice
Limonium sinuatum
8 – 22 Mar
8-10 wk
17 May
8 wk after
Sweet William
Dianthus barbatus
5 – 19 Jan
6-8 wk
2 Mar
3 wk before
27 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
22 Mar – 5 Apr
6-8 wk
17 May
8 wk after
4 Jun
11 wk after
Dahlia
Dahlia × pinnata
15 – 29 Mar
6-8 wk
10 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
20 Feb – 20 Mar
4-8 wk
17 Apr
4 wk after
17 Apr
4 wk after
Foxglove
Digitalis purpurea
22 Dec – 5 Jan
8-10 wk
2 Mar
3 wk before
4 Apr
2 wk after
Busy lizzie
Impatiens walleriana
5 Mar – 2 Apr
8-12 wk
28 May
10 wk after
Creeping zinnia
Sanvitalia procumbens
22 Mar – 5 Apr
6-8 wk
17 May
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
5 – 19 Apr
4-6 wk
17 May
8 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Feb
8-10 wk
23 Apr
5 wk after
Love in a mist
Nigella damascena
16 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
22 Mar – 5 Apr
6-8 wk
17 May
8 wk after
4 Jun
11 wk after
Tall verbena
Verbena bonariensis
29 Jan – 26 Feb
8-12 wk
23 Apr
5 wk after
Cardoon
Cynara cardunculus
Fleece
7 Feb – 7 Mar
8-12 wk
2 May
6 wk after
Regal-foxtail
Ptilotus nobilis
5 Mar – 2 Apr
8-12 wk
28 May
10 wk after
Globe amaranth
Gomphrena globosa
2 – 16 Apr
6-8 wk
28 May
10 wk after
Corn poppy
Papaver rhoeas
16 Mar
1 wk before
Snapdragon
Antirrhinum majus
19 Dec – 16 Jan
8-12 wk
13 Mar
1 wk before
27 Mar
1 wk after
Flossflower
Ageratum houstonianum
19 Mar – 2 Apr
8-10 wk
28 May
10 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Jan
5-8 wk
2 Mar
3 wk before
Stock
Matthiola incana
16 – 30 Jan
6-8 wk
13 Mar
1 wk before
4 Apr
2 wk after
Wormwood
Artemisia absinthium
5 – 19 Jan
6-8 wk
2 Mar
3 wk before
4 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
16 – 30 Apr
4-6 wk
28 May
10 wk after
Pansy
Viola × wittrockiana
12 – 26 Dec
8-10 wk
20 Feb
4 wk before
27 Mar
1 wk after
Petunia
Petunia
22 Feb – 22 Mar
8-12 wk
17 May
8 wk after
Scabious
Scabiosa atropurpurea
26 Feb – 12 Mar
6-8 wk
23 Apr
5 wk after
2 May
6 wk after
Zinnia
Zinnia elegans
5 – 19 Apr
4-6 wk
17 May
8 wk after
Common morning glory
Ipomoea purpurea
23 Apr – 7 May
3-5 wk
28 May
10 wk after
Cosmos
Cosmos bipinnatus
5 – 19 Apr
4-6 wk
17 May
8 wk after
2 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
5 Mar – 2 Apr
8-12 wk
28 May
10 wk after
Bee balm
Monarda didyma
28 Dec – 25 Jan
8-12 wk
22 Mar
Vid frost
17 Apr
4 wk after
Yarrow
Achillea millefolium
5 – 19 Jan
6-8 wk
2 Mar
3 wk before
4 Apr
2 wk after
Safflower
Carthamus tinctorius
2 Mar
3 wk before
16 Mar
1 wk before
Iceland poppy
Papaver nudicaule
26 Dec – 9 Jan
6-8 wk
20 Feb
4 wk before
9 Mar
2 wk before
Bishop's flower
Ammi majus
23 Feb – 9 Mar
4-6 wk
6 Apr
2 wk after
4 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
22 Feb – 8 Mar
10-12 wk
17 May
8 wk after
Sunflower
Helianthus annuus
19 – 26 Apr
3-4 wk
17 May
8 wk after
17 Apr
4 wk after
China aster
Callistephus chinensis
22 Mar – 5 Apr
6-8 wk
17 May
8 wk after
2 May
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Mar
6-8 wk
2 May
6 wk after
2 May
6 wk after
Hollyhock
Alcea rosea
5 – 19 Jan
6-8 wk
2 Mar
3 wk before
4 Apr
2 wk after
Delphinium
Delphinium elatum
17 Jan – 14 Feb
8-12 wk
11 Apr
3 wk after
17 Apr
4 wk after
African marigold
Tagetes erecta
22 Mar – 5 Apr
6-8 wk
17 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
26 Feb – 12 Mar
6-8 wk
23 Apr
5 wk after
2 May
6 wk after
Woodland sage
Salvia nemorosa
20 Jan – 3 Feb
8-10 wk
31 Mar
1 wk after
17 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
19 Mar – 16 Apr
6-10 wk
28 May
10 wk after
California goldenpoppy
Eschscholzia californica
16 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
8 – 22 Mar
8-10 wk
17 May
8 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Jan
6-8 wk
2 Mar
3 wk before
4 Apr
2 wk after
Current date Soon Date passed