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Rel. frost
Last spring frost (0°C) 26 Apr Normal year · 20 years of data
Frost-free season 189 days 26 Apr – 1 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 Mar
20 Jun
5-7 wk
26 Apr
25 Jul
0 wk
20 Apr
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Mar
2 Jul
4-6 wk
26 Apr
30 Jul
0 wk
20 Apr
20 Jul
1 wk before
Chili pepper
Capsicum annuum
14 Mar – 11 Apr
15 Apr
8-12 wk
6 Jun
10 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Mar
15 Jun
5-7 wk
26 Apr
20 Jul
0 wk
13 Apr
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
9 – 16 May
22 Jun
3-4 wk
6 Jun
13 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 May
12 Jun
4-5 wk
6 Jun
10 Jul
6 wk after
6 Jun
30 Jun
6 wk after
Butter bean
Phaseolus lunatus
Fleece
4 – 11 Jun
3-4 wk
2 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
1 Feb – 1 Mar
5 Apr
8-12 wk
26 Apr
31 May
0 wk
9 May
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 Apr
20 Jun
1 wk before
20 Apr
10 Jun
1 wk before
Maize
Zea mays
25 Apr – 2 May
12 Jun
3-4 wk
23 May
3 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Mar – 5 Apr
9 Jul
3-4 wk
26 Apr
30 Jul
0 wk
9 May
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 Apr
10 Jul
0 wk
13 Apr
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Mar
15 Jun
5-7 wk
26 Apr
20 Jul
0 wk
13 Apr
10 Jul
2 wk before
Potato
Solanum tuberosum
20 Mar – 3 Apr
12 Jun
4-6 wk
1 May
10 Jul
1 wk after
1 May
30 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Mar
25 Jun
5-7 wk
26 Apr
30 Jul
0 wk
20 Apr
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
9 – 16 May
6 Jul
3-4 wk
6 Jun
27 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Mar – 5 Apr
3 Jul
3-4 wk
26 Apr
24 Jul
0 wk
9 May
14 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Mar
27 Jun
4-6 wk
26 Apr
25 Jul
0 wk
Lettuce
Lactuca sativa
29 Mar – 5 Apr
14 Jul
3-4 wk
26 Apr
4 Aug
0 wk
20 Apr
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Mar
27 Jun
4-6 wk
26 Apr
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
16 – 30 Mar
6 Jun
2-4 wk
13 Apr
20 Jun
2 wk before
13 Apr
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 Apr
20 Jun
1 wk before
20 Apr
10 Jun
1 wk before
Spinach
Spinacia oleracea
29 Mar – 5 Apr
29 Jul
3-4 wk
26 Apr
19 Aug
0 wk
6 Apr
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
28 May – 11 Jun
4-6 wk
9 Jul
11 wk after
Garden tomato
Solanum lycopersicum
28 Mar – 11 Apr
22 May
6-8 wk
23 May
3 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
25 Apr – 9 May
8 Jul
2-4 wk
23 May
22 Jul
4 wk after
6 Jun
12 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Mar
27 Jun
4-6 wk
26 Apr
25 Jul
0 wk
Garden pea
Pisum sativum
29 Mar – 5 Apr
29 Jun
3-4 wk
26 Apr
20 Jul
0 wk
20 Apr
10 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
25 Apr – 9 May
14 Jun
4-6 wk
6 Jun
12 Jul
6 wk after
Lemon balm
Melissa officinalis
15 Feb – 1 Mar
25 May
8-10 wk
26 Apr
20 Jul
0 wk
22 May
10 Jul
4 wk after
Dill
Anethum graveolens
20 Apr
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
1 – 15 Mar
8 Jun
6-8 wk
26 Apr
20 Jul
0 wk
20 Apr
10 Jul
1 wk before
Spearmint
Mentha spicata
1 Feb – 1 Mar
25 May
8-12 wk
26 Apr
20 Jul
0 wk
22 May
10 Jul
4 wk after
Coriander
Coriandrum sativum
26 Apr
19 Aug
0 wk
9 May
9 Aug
2 wk after
Garden sage
Salvia officinalis
15 Feb – 1 Mar
10 May
8-10 wk
26 Apr
5 Jul
0 wk
Common thyme
Thymus vulgaris
15 Feb – 1 Mar
15 May
8-10 wk
26 Apr
10 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Mar
29 May
6-8 wk
26 Apr
10 Jul
0 wk
22 May
30 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Mar
29 May
6-8 wk
26 Apr
10 Jul
0 wk
20 Apr
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
18 Jan – 15 Feb
11 Apr
10-14 wk
26 Apr
20 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
9 – 16 May
21 Jun
3-4 wk
6 Jun
12 Jul
6 wk after
Cornflower
Centaurea cyanus
26 Apr
20 Jul
0 wk
20 Apr
10 Jul
1 wk before
Statice
Limonium sinuatum
14 – 28 Mar
15 May
8-10 wk
23 May
10 Jul
4 wk after
Sweet William
Dianthus barbatus
1 – 15 Mar
6-8 wk
26 Apr
0 wk
1 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
28 Mar – 11 Apr
29 May
6-8 wk
23 May
10 Jul
4 wk after
9 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
23 Mar – 6 Apr
29 May
6-8 wk
18 May
10 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
27 Mar – 24 Apr
12 Jun
4-8 wk
22 May
10 Jul
4 wk after
22 May
30 Jun
4 wk after
Foxglove
Digitalis purpurea
15 Feb – 1 Mar
8-10 wk
26 Apr
0 wk
9 May
2 wk after
Busy lizzie
Impatiens walleriana
14 Mar – 11 Apr
10 Jul
8-12 wk
6 Jun
4 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
28 Mar – 11 Apr
8 Jun
6-8 wk
23 May
20 Jul
4 wk after
Hyacinth bean
Dolichos lablab
13 – 27 May
4-6 wk
24 Jun
8 wk after
Chinese lantern
Physalis alkekengi
15 Feb – 1 Mar
25 Apr
8-10 wk
26 Apr
20 Jun
0 wk
Love in a mist
Nigella damascena
26 Apr
5 Jul
0 wk
20 Apr
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
28 Mar – 11 Apr
19 May
6-8 wk
23 May
30 Jun
4 wk after
9 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
1 Feb – 1 Mar
25 Apr
8-12 wk
26 Apr
20 Jun
0 wk
Cardoon
Cynara cardunculus
28 Feb – 28 Mar
26 Mar
8-12 wk
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
14 Mar – 11 Apr
7 May
8-12 wk
6 Jun
2 Jul
6 wk after
Globe amaranth
Gomphrena globosa
11 – 25 Apr
21 May
6-8 wk
6 Jun
2 Jul
6 wk after
Corn poppy
Papaver rhoeas
26 Apr
20 Jul
0 wk
20 Apr
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 Feb – 1 Mar
15 May
8-12 wk
26 Apr
10 Jul
0 wk
1 May
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
28 Mar – 11 Apr
25 May
8-10 wk
6 Jun
20 Jul
6 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Mar
5 Jun
5-8 wk
26 Apr
10 Jul
0 wk
Stock
Matthiola incana
1 – 15 Mar
8 Jun
6-8 wk
26 Apr
20 Jul
0 wk
9 May
10 Jul
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Mar
9 May
6-8 wk
26 Apr
20 Jun
0 wk
9 May
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
25 Apr – 9 May
30 May
4-6 wk
6 Jun
27 Jun
6 wk after
Garden pansy
Viola × wittrockiana
15 Feb – 1 Mar
25 May
8-10 wk
26 Apr
20 Jul
0 wk
1 May
10 Jul
1 wk after
Petunia
Petunia
28 Feb – 28 Mar
15 May
8-12 wk
23 May
10 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Mar
9 May
6-8 wk
26 Apr
20 Jun
0 wk
6 Jun
10 Jun
6 wk after
Common zinnia
Zinnia elegans
11 – 25 Apr
22 Jun
4-6 wk
23 May
20 Jul
4 wk after
Common morning glory
Ipomoea purpurea
2 – 16 May
21 Jun
3-5 wk
6 Jun
12 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
11 – 25 Apr
12 Jun
4-6 wk
23 May
10 Jul
4 wk after
6 Jun
30 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
1 – 29 Apr
6 Jun
8-12 wk
24 Jun
1 Aug
8 wk after
Bee balm
Monarda didyma
1 Feb – 1 Mar
25 Apr
8-12 wk
26 Apr
20 Jun
0 wk
22 May
10 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Mar
9 Apr
6-8 wk
26 Apr
21 May
0 wk
9 May
11 May
2 wk after
Safflower
Carthamus tinctorius
26 Apr
20 Jun
0 wk
20 Apr
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Mar
29 May
6-8 wk
26 Apr
10 Jul
0 wk
11 Mar
30 Jun
7 wk before
Bishop's flower
Ammi majus
15 – 29 Mar
12 Jun
4-6 wk
26 Apr
10 Jul
0 wk
9 May
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
14 – 28 Mar
11 Apr
10-12 wk
6 Jun
20 Jun
6 wk after
Sunflower
Helianthus annuus
25 Apr – 2 May
19 Jun
3-4 wk
23 May
10 Jul
4 wk after
22 May
30 Jun
4 wk after
China aster
Callistephus chinensis
28 Mar – 11 Apr
8 Jun
6-8 wk
23 May
20 Jul
4 wk after
6 Jun
10 Jul
6 wk after
Annual phlox
Phlox drummondii
19 Mar – 2 Apr
8 Jun
6-8 wk
14 May
20 Jul
3 wk after
6 Jun
10 Jul
6 wk after
Hollyhock
Alcea rosea
1 – 15 Mar
6-8 wk
26 Apr
0 wk
9 May
2 wk after
Alpine delphinium
Delphinium elatum
1 Feb – 1 Mar
25 Apr
8-12 wk
26 Apr
20 Jun
0 wk
22 May
10 Jun
4 wk after
African marigold
Tagetes erecta
28 Mar – 11 Apr
8 Jun
6-8 wk
23 May
20 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Mar
29 May
6-8 wk
26 Apr
10 Jul
0 wk
6 Jun
30 Jun
6 wk after
Wood sage
Salvia nemorosa
15 Feb – 1 Mar
15 Apr
8-10 wk
26 Apr
10 Jun
0 wk
22 May
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
28 Mar – 25 Apr
31 May
6-10 wk
6 Jun
12 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
26 Apr
20 Jul
0 wk
20 Apr
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
14 – 28 Mar
15 May
8-10 wk
23 May
10 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Mar
9 May
6-8 wk
26 Apr
20 Jun
0 wk
9 May
10 Jun
2 wk after