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Rel. frost
Last spring frost (0°C) 25 Apr Normal year · 20 years of data
Frost-free season 197 days 25 Apr – 8 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)
8 – 22 Apr
22 Jun
5-7 wk
27 May
27 Jul
5 wk after
19 Apr
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
4 Jul
4-6 wk
15 May
1 Aug
3 wk after
19 Apr
22 Jul
1 wk before
Chili pepper
Capsicum annuum
8 Apr – 6 May
17 Apr
8-12 wk
1 Jul
10 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Feb
17 Jun
5-7 wk
26 Mar
22 Jul
4 wk before
12 Apr
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
3 – 10 Jun
24 Jun
3-4 wk
1 Jul
15 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
27 May – 3 Jun
14 Jun
4-5 wk
1 Jul
12 Jul
10 wk after
5 Jun
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
11 – 18 Jun
3-4 wk
9 Jul
11 wk after
Onion
Allium cepa (Cepa-gruppen)
31 Jan – 28 Feb
7 Apr
8-12 wk
25 Apr
2 Jun
Vid frost
8 May
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Apr
22 Jun
1 wk before
19 Apr
12 Jun
1 wk before
Maize
Zea mays
23 – 30 May
14 Jun
3-4 wk
20 Jun
5 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
11 Jul
3-4 wk
27 May
1 Aug
5 wk after
8 May
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 Apr
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Feb
17 Jun
5-7 wk
26 Mar
22 Jul
4 wk before
12 Apr
12 Jul
2 wk before
Potato
Solanum tuberosum
19 Mar – 2 Apr
14 Jun
4-6 wk
30 Apr
12 Jul
1 wk after
30 Apr
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Feb
27 Jun
5-7 wk
26 Mar
1 Aug
4 wk before
19 Apr
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
3 – 10 Jun
10 Jul
3-4 wk
1 Jul
31 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Apr – 6 May
3 Jul
3-4 wk
27 May
24 Jul
5 wk after
8 May
14 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
29 Jun
4-6 wk
15 May
27 Jul
3 wk after
Lettuce
Lactuca sativa
19 – 26 Mar
16 Jul
3-4 wk
16 Apr
6 Aug
1 wk before
19 Apr
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Mar
29 Jun
4-6 wk
16 Apr
27 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Mar
8 Jun
2-4 wk
12 Apr
22 Jun
2 wk before
12 Apr
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 Apr
22 Jun
1 wk before
19 Apr
12 Jun
1 wk before
Spinach
Spinacia oleracea
8 – 15 Mar
31 Jul
3-4 wk
5 Apr
21 Aug
3 wk before
5 Apr
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 May – 10 Jun
4-6 wk
8 Jul
11 wk after
Garden tomato
Solanum lycopersicum
25 Apr – 9 May
24 May
6-8 wk
20 Jun
5 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
23 May – 6 Jun
12 Jul
2-4 wk
20 Jun
26 Jul
8 wk after
5 Jun
16 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
29 Jun
4-6 wk
15 May
27 Jul
3 wk after
Garden pea
Pisum sativum
8 – 15 Mar
1 Jul
3-4 wk
5 Apr
22 Jul
3 wk before
19 Apr
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
20 May – 3 Jun
18 Jun
4-6 wk
1 Jul
16 Jul
10 wk after
Lemon balm
Melissa officinalis
14 – 28 Feb
27 May
8-10 wk
25 Apr
22 Jul
Vid frost
21 May
12 Jul
4 wk after
Dill
Anethum graveolens
19 Apr
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
29 Jan – 12 Feb
10 Jun
6-8 wk
26 Mar
22 Jul
4 wk before
19 Apr
12 Jul
1 wk before
Spearmint
Mentha spicata
11 Jan – 8 Feb
27 May
8-12 wk
5 Apr
22 Jul
3 wk before
21 May
12 Jul
4 wk after
Coriander
Coriandrum sativum
8 May
11 Aug
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
12 May
8-10 wk
27 May
7 Jul
5 wk after
Common thyme
Thymus vulgaris
6 – 20 Mar
17 May
8-10 wk
15 May
12 Jul
3 wk after
Oregano
Origanum vulgare
9 – 23 Mar
31 May
6-8 wk
4 May
12 Jul
1 wk after
21 May
2 Jul
4 wk after
Parsley
Petroselinum crispum
8 – 22 Feb
31 May
6-8 wk
5 Apr
12 Jul
3 wk before
19 Apr
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
18 Feb – 18 Mar
13 Apr
10-14 wk
27 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
3 – 10 Jun
25 Jun
3-4 wk
1 Jul
16 Jul
10 wk after
Cornflower
Centaurea cyanus
5 Apr
22 Jul
3 wk before
19 Apr
12 Jul
1 wk before
Statice
Limonium sinuatum
11 – 25 Apr
17 May
8-10 wk
20 Jun
12 Jul
8 wk after
Sweet William
Dianthus barbatus
8 – 22 Feb
6-8 wk
5 Apr
3 wk before
30 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
25 Apr – 9 May
31 May
6-8 wk
20 Jun
12 Jul
8 wk after
8 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
18 Apr – 2 May
31 May
6-8 wk
13 Jun
12 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
26 Mar – 23 Apr
14 Jun
4-8 wk
21 May
12 Jul
4 wk after
21 May
2 Jul
4 wk after
Foxglove
Digitalis purpurea
25 Jan – 8 Feb
8-10 wk
5 Apr
3 wk before
8 May
2 wk after
Busy lizzie
Impatiens walleriana
8 Apr – 6 May
12 Jul
8-12 wk
1 Jul
6 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
25 Apr – 9 May
10 Jun
6-8 wk
20 Jun
22 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
20 May – 3 Jun
4-6 wk
1 Jul
10 wk after
Chinese lantern
Physalis alkekengi
18 Mar – 1 Apr
27 Apr
8-10 wk
27 May
22 Jun
5 wk after
Love in a mist
Nigella damascena
19 Apr
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
25 Apr – 9 May
21 May
6-8 wk
20 Jun
2 Jul
8 wk after
8 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
4 Mar – 1 Apr
27 Apr
8-12 wk
27 May
22 Jun
5 wk after
Cardoon
Cynara cardunculus
28 Mar – 25 Apr
28 Mar
8-12 wk
20 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
8 Apr – 6 May
11 May
8-12 wk
1 Jul
6 Jul
10 wk after
Globe amaranth
Gomphrena globosa
6 – 20 May
25 May
6-8 wk
1 Jul
6 Jul
10 wk after
Corn poppy
Papaver rhoeas
19 Apr
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
22 Jan – 19 Feb
17 May
8-12 wk
16 Apr
12 Jul
1 wk before
30 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
22 Apr – 6 May
27 May
8-10 wk
1 Jul
22 Jul
10 wk after
Sweet pea
Lathyrus odoratus
8 Feb – 1 Mar
7 Jun
5-8 wk
5 Apr
12 Jul
3 wk before
Stock
Matthiola incana
19 Feb – 5 Mar
10 Jun
6-8 wk
16 Apr
22 Jul
1 wk before
8 May
12 Jul
2 wk after
Wormwood
Artemisia absinthium
8 – 22 Feb
11 May
6-8 wk
5 Apr
22 Jun
3 wk before
8 May
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
20 May – 3 Jun
3 Jun
4-6 wk
1 Jul
1 Jul
10 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Jan
27 May
8-10 wk
26 Mar
22 Jul
4 wk before
30 Apr
12 Jul
1 wk after
Petunia
Petunia
28 Mar – 25 Apr
17 May
8-12 wk
20 Jun
12 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Apr
11 May
6-8 wk
27 May
22 Jun
5 wk after
5 Jun
12 Jun
6 wk after
Common zinnia
Zinnia elegans
9 – 23 May
24 Jun
4-6 wk
20 Jun
22 Jul
8 wk after
Common morning glory
Ipomoea purpurea
27 May – 10 Jun
25 Jun
3-5 wk
1 Jul
16 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
9 – 23 May
14 Jun
4-6 wk
20 Jun
12 Jul
8 wk after
5 Jun
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
15 Apr – 13 May
10 Jun
8-12 wk
8 Jul
5 Aug
11 wk after
Bee balm
Monarda didyma
31 Jan – 28 Feb
27 Apr
8-12 wk
25 Apr
22 Jun
Vid frost
21 May
12 Jun
4 wk after
Yarrow
Achillea millefolium
8 – 22 Feb
11 Apr
6-8 wk
5 Apr
23 May
3 wk before
8 May
13 May
2 wk after
Safflower
Carthamus tinctorius
5 Apr
22 Jun
3 wk before
19 Apr
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
29 Jan – 12 Feb
31 May
6-8 wk
26 Mar
12 Jul
4 wk before
12 Apr
2 Jul
2 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
14 Jun
4-6 wk
10 May
12 Jul
2 wk after
8 May
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
8 – 22 Apr
13 Apr
10-12 wk
1 Jul
10 wk after
Sunflower
Helianthus annuus
23 – 30 May
21 Jun
3-4 wk
20 Jun
12 Jul
8 wk after
21 May
2 Jul
4 wk after
China aster
Callistephus chinensis
25 Apr – 9 May
10 Jun
6-8 wk
20 Jun
22 Jul
8 wk after
5 Jun
12 Jul
6 wk after
Annual phlox
Phlox drummondii
10 – 24 Apr
10 Jun
6-8 wk
5 Jun
22 Jul
6 wk after
5 Jun
12 Jul
6 wk after
Hollyhock
Alcea rosea
8 – 22 Feb
6-8 wk
5 Apr
3 wk before
8 May
2 wk after
Alpine delphinium
Delphinium elatum
20 Feb – 20 Mar
27 Apr
8-12 wk
15 May
22 Jun
3 wk after
21 May
12 Jun
4 wk after
African marigold
Tagetes erecta
25 Apr – 9 May
10 Jun
6-8 wk
20 Jun
22 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Apr
31 May
6-8 wk
27 May
12 Jul
5 wk after
5 Jun
2 Jul
6 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
17 Apr
8-10 wk
4 May
12 Jun
1 wk after
21 May
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
22 Apr – 20 May
4 Jun
6-10 wk
1 Jul
16 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
19 Apr
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
11 – 25 Apr
17 May
8-10 wk
20 Jun
12 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Feb
11 May
6-8 wk
5 Apr
22 Jun
3 wk before
8 May
12 Jun
2 wk after