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No frost in sight Last frost normally in 4 days (13 May), but frost-free in the forecast.
Method
Rel. frost
Last spring frost (0°C) 13 May Normal year · 20 years of data
Frost-free season 141 days 13 May – 1 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)
25 Mar – 8 Apr
16 Jun
5-7 wk
13 May
21 Jul
0 wk
17 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
28 Jun
4-6 wk
13 May
26 Jul
0 wk
17 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
17 Mar – 14 Apr
3 Apr
8-12 wk
9 Jun
4 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
11 Jun
5-7 wk
13 May
16 Jul
0 wk
13 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
28 May – 4 Jun
28 May
3-4 wk
25 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
21 – 28 May
1 Jun
4-5 wk
25 Jun
29 Jun
6 wk after
1 Jul
7 wk after
Butter bean
Phaseolus lunatus
Greenhouse
2 – 9 Jun
3-4 wk
30 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
1 Apr
8-12 wk
13 May
27 May
0 wk
3 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
16 Jun
1 wk after
17 May
6 Jun
1 wk after
Maize
Zea mays
12 – 19 May
18 May
3-4 wk
9 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
5 Jul
3-4 wk
21 May
26 Jul
1 wk after
3 Jun
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
6 Jul
0 wk
13 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
11 Jun
5-7 wk
13 May
16 Jul
0 wk
13 May
6 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
4 Jun
4-6 wk
29 May
2 Jul
2 wk after
29 May
22 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
21 Jun
5-7 wk
13 May
26 Jul
0 wk
17 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
28 May – 4 Jun
20 Jun
3-4 wk
25 Jun
11 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
17 Jun
3-4 wk
21 May
8 Jul
1 wk after
3 Jun
28 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
23 Jun
4-6 wk
13 May
21 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
10 Jul
3-4 wk
13 May
31 Jul
0 wk
17 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
23 Jun
4-6 wk
13 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Apr
2 Jun
2-4 wk
13 May
16 Jun
0 wk
13 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
16 Jun
1 wk after
17 May
6 Jun
1 wk after
Spinach
Spinacia oleracea
15 – 22 Apr
25 Jul
3-4 wk
13 May
15 Aug
0 wk
9 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
11 wk after
Garden tomato
Solanum lycopersicum
14 – 28 Apr
27 Apr
6-8 wk
9 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
12 – 26 May
22 Jun
2-4 wk
9 Jun
6 Jul
4 wk after
1 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
23 Jun
4-6 wk
13 May
21 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
25 Jun
3-4 wk
13 May
16 Jul
0 wk
17 May
6 Jul
1 wk after

Herbs

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