I don't plant many veggies in fall from seed aside from a few radishes and lettuces. But flowers? Oh yes, now is the time- all the way through February.
I direct sow:

annuals-
larkspur
red flax
toadflax
California poppies
breadseed poppies
paludosum daisies
alyssum
Queen Anne's Lace
nigella
bachelor buttons
elegant clarkia
nasturtiums
violas
Mexican hat
annual coreopsis

perennials/biennials-
yarrow
columbine
foxglove
feverfew

Hurray for fall! Now, if I could just get a few hours to clear out the summer stuff and toss the seeds out...

Renee

TO SOW DIRECT IN LATE SUMMER (August-September)

VEGETABLES

Beets
Broad bean (fava)
Carrots
Celeriac
Chard
Chinese Cabbage
Daikon radish
Dandelion
Endive, Chicory
French (green) bean
Kale
Kohlrabi
Leek
Lima bean
Mustard
Onion ("sets")
Parsnip
Potato ("seed potatoes")
Purslane
Radish
Runner bean
Rutabaga
Salsify
Sorrel
Spinach
Summer Squash
Sunflower
Turnips
Tyfon

HERBS

Chervil
Soup/leaf celery
Marjoram
Parsley
Anise

TO SOW DIRECT IN FALL (October-November)

VEGETABLES

Arugula
Beets
Bok Choy
Broad bean (fava)
Carrots
Celeriac
Chard
Chinese broccoli
Chinese Cabbage
Chinese mustard
Collards
Corn salad
Cress
Daikon radish
Dandelion
Endive, Chicory
Fennel ("bulb" type)
Garland chrysanthemum
Kale
Kohlrabi
Lambs Quarters
Leek
Lettuce, head
Lettuce, loose-leaf
Mustard
Onion ("sets")
Orach
Pak Choy
Parsnip
Potatoes ("seed potatoes")
Pea
Radish
Rutabaga
Salsify
Snow peas
Sorrel
Spinach
Sugar peas
Turnips
Tyfon

HERBS

Chervil
Soup/leaf celery
Cilantro, coriander
Marjoram
Parsley
Anise

FLOWERS FOR FALL DIRECT SOWING

Agrostemma gracilis (A. githago) CORNCOCKLE
Amberboa (Centaurea) moschata SWEET SULTAN
Ammi majus (of floristÂ) QUEEN ANNEÂS LACE
Calendula officinalis POT MARIGOLD
Centaurea cyanus CORNFLOWER, BACHELORSÂ BUTTONS
Chrysanthemum carinatum TRICOLOR DAISY
Chrysanthemum segetum CORN MARIGOLD
Clarkia unguiculata (elegans) CLARKIA
Consolida regalis/ajacis LARKSPUR
Dimorphotheca sinuata AFRICAN DIASY
Dorotheanthus bellidiformis LIVINGSTONE DAISY
Eschscholzia californica CALIFORNIA POPPY
Gaillardia pulchella BLANKET FLOWER
Gypsophila elegans ANNUAL BABYÂS-BREATH
Iberis umbellata CANDYTUFT
Lathyrus odoratus SWEET PEA
Linaria maroccana BABY SNAPDRAGON
Linaria reticulata FLAMENCO TOADFLAX
Linum grandiflorum SCARLET FLAX
Lobularia maritima SWEET ALYSSUM
Lupinus mutabilis (L. hartwegii) MEXICAN LUPINE
Malcomia maritima VIRGINIA STOCK
Malope trifida MALOPE
Matthiola longipetala bicornis EVENING-SCENTED STOCK
Nigella damascena LOVE-IN-A-MIST
Omphalodes linifolia BLUE NAVELWORT
Papaver commutatum FLANDERS POPPY
Papaver rhoeas CORN POPPY, SHIRLEY POPPY
Papaver somniferum PEONY POPPY, CARNATION POPPY
Reseda odorata MIGNONETTE
Silene coeli-rosa ROSE-OF-HEAVEN
Tropaeolum majus NASTURTIUM
Xanthisma texanum TEXAS SLEEPY DAISY

NATIVE WILDFLOWERS
TO SOW IN FALL WHERE THEY ARE TO GROW

Camissonia bistorta CALIFORNIA SUN CUP
Clarkia amoena GODETIA
Clarkia bottae BOTTAEÂS CLARKIA
Clarkia unguiculata ELEGANT CLARKIA, FAREWELL-TO-SPRING
Collinsia heterophylla CHINESE HOUSES
Collomia grandiflora COLLOMIA
Eschscholzia caespitosa DWARF CALIFORNIA POPPY
Eschscholzia californica CALIFORNIA POPPY
Gilia capitata QUEEN ANNEÂS THIMBLES
Gilia tricolor BIRDÂS EYE GILIA
Lasthenia glabrata GOLDFIELDS
Layia platyglossa TIDYTIPS
Limnanthes douglasii MEADOWFOAM
Linanthus androsaceus FALSE BABY STARS
Linanthus grandiflorus MOUNTAIN PHLOX
Lupinus bicolor FAIRY LUPINE
Lupinus densiflorus GOLDEN LUPINE
Lupinus succulentus ARROYO LUPINE
Lupinus nanus SKY LUPINE
Madia elegans ELEGANT TARWEED
Mentzelia lindleyi BLAZING STARS
Nemophila maculata FIVESPOT
Nemophila menziesii BABY BLUE-EYES
Phacelia campanularia CALIFORNIA BLUEBELL
Phacelia tanacetifolia TANSY-LEAF PHACELIA
Platystemon californicum CREAM CUPS
Salvia columbariae CHIA
Stylomecon heterophylla WIND POPPY

Wow I will have my hands full African daisy in the fall excellent!!
I do not have irrigation and spring sowing requires me to water patrol on times i rather not be outside.
hurray for southern cal!
And thank you so much for your great answers

Just realized that I am a bit colder than you it gets nippy even though I am like 45 min straight in from Oceanside or Carlsbad.

helen:

You are not colder than me or not so much colder that it would impact your choices as I listed.

Joe

Thanks Joe I will take the plunge!