My Southern California Seed Schedule- Zone 10b

Zone 10b is a special climate. Our winters are extremely mild, so most advice on seed packets or online doesn’t really pertain to us. Before following this guide, check your USDA gardening zone here

If we are in different zones, you could use this guide as a general outline and adjust accordingly (applicable down to zone 9 with some exceptions).

If I have a grow guide for a specific vegetable or flower available on my website, I have made the name a clickable link so you can view the growing guide. Happy gardening!

Direct Sow vs. Containers

I do a mix of direct sowing and transplanting in my garden. This might be different for each garden and gardener. The decision of whether or not to direct sow is really based on your garden and if you have pest problems, etc. I encourage you to read Direct Sowing Versus Transplanting for more insight and helpful tips on making this decision. 

This guide is for when I start seeds. If you are buying transplants at a nursery you can estimate another month or so out (for example, sow seeds in May but transplant in June/July).

READ my guide to seed starting HERE.

When do I transplant my container-grown seedlings?  This guide is for starting from seed. Starting your seeds in pots or pellets can give you a head start on growing without taking up room in the garden. The time to transplant varies from plant to plant…also with how much room you have in the garden. You’ll watch them outgrow their pots, and decide if it is time to put in the garden or transfer to a larger pot.

Where to put my seedlings while growing? : If starting for Spring, it is usually best to start your seeds indoors or in a greenhouse. Sometimes the weather cooperates and I can start my seeds outdoors during the day and then bring them indoors for shelter at night. If starting any other time of year where it is generally warm outside, the ideal place to raise seedlings is in a partially shaded area, outdoors, with NO hot afternoon sun. If birds or pests are going to be a problem, you can start them in a sunny windowsill indoors until they are more established or cover the seedlings with screen or mesh.

2022 update: I actually used an indoor grow light setup for the first time this Winter/Spring! If you want to see it, check out my Garage Seed Starting Setup

Where can I buy high-quality seeds? See my list of seed sources

January

Bare root planting! Visions in my head of climbing roses and delicate fruit blossoms! January can be one of our coolest months of the entire year which means it is perfect for getting outside and doing some pretty strenuous garden tasks (remember, zone 10b doesn’t really freeze or get snow). For all us Southern California gardeners, it’s time to plant your bare root trees and shrubs. It’s also time for pruning your existing fruit trees. I truly enjoy gardening this time of year. In fact, back in 2016, this was the month that we built our very first raised bed garden. Cheers to a new year!

Seeds you can start:

*this month I only continue to sow cool season plants, and really, it’s optional.

Vegetables

radishes

carrots

kohlrabi

turnips

assorted asian greens

lettuces

more cabbages

more peas

Herbs/alliums

dill

cilantro

spring leeks

chives

fennel

Flowers

poppies

calendula

pansies

stock

sweet peas

nasturtiums

cornflower

February

This month I continue many of the gardening tasks from January. Planning the garden, purchasing any bare root plants, or finishing the pruning of our fruit trees to prep for Spring. 

Seeds you can start:

*this month I only continue to sow cool season plants, and start peppers and/or tomatoes if wanting to get an early start.

Vegetables

radishes

carrots

kohlrabi

turnips

assorted asian greens

lettuces

peppers indoors 

tomatoes (optional) indoors 

eggplant  indoors 

Herbs/alliums

dill

cilantro

spring leeks

Flowers

poppies

calendula

pansies

stock

cornflower

sweet peas

nasturtiums

March

This time of year is all about watching the weather. Last year, I tried pushing the limits on seed starting, a cold front came in suddenly, and many of my seedlings became stunted. Pay close attention to the weather and keep up on my newsletter and website for tips on seed starting.

Seeds you can start:

*this month I only continue to sow cool season succession crops AND start some of my summer seedlings.

Vegetables

radishes

carrots

kohlrabi

turnips

assorted asian greens

lettuces

Beets 

Summer plants (most likely indoors)

peppers

tomatoes

eggplants

squash

tomatillos

ground cherries

zucchini

celery

cucumbers

runner beans

Herbs/alliums

parsley

basil

shiso

most herbs

Flowers

nasturtiums

yarrow

scabiosa

cosmos

marigold

various everlastings

April

Depending on weather, April might be more ideal than March for starting those heat-loving summer vegetables. As always, pay attention to weather predictions and plant accordingly.

Seeds you can start:

Vegetables (same as March PLUS⇓)

okra

corn

summer squash

beans

melons

beets

Herbs

basil

sage

thyme

oregano

rosemary (buy as a start due to difficult germination)

lavender (buy as a start due to difficult germination)

Flowers (same as March PLUS⇓)

cosmos

zinnias

nigella

borage

amaranthus

sunflowers

May

May is a great time to catch up on sowing any plants you realize you forgot! It’s also nice and warm for direct sowing a lot of heat loving vegetables, like the ones on this list HERE.

Seeds you can start:

Vegetables 

*sow anything you forgot in April

okra

corn

summer squash

beans

melons

beets

Herbs

basil

rosemary (buy as a start due to difficult germination)

lavender (buy as a start due to difficult germination)

Flowers

cosmos

zinnias

borage

amaranthus

sunflowers

June

June is a beautiful time in the garden—quite possibly the most beautiful. Everything is growing. The sweet peas are on their last flush, the roses have graced the garden with their perfume, and the summer vegetables are truly teasing us with anticipation. It’s easy to get distracted and stop sowing seeds. While I don’t consider this month a major seed sowing month, I do like to keep up on my succession sowing or quickly start any vegetables I might have forgotten.

Seeds you can start:

Vegetables (mostly succession sowing)

corn

beans

Maybe second wave of squash & melons

Herbs

basil

Flowers 

sunflowers

July

Maybe take a little break and enjoy all your hard work. The summer garden is bountiful, and the temperatures are too hot during the day to do much gardening. Besides, some succession sowing, I keep it pretty simple in July. 

Seeds you can start:

Vegetables 

Succession sow corn

Succession sow beans

Possible second wave tomatoes, squashes, etc.

Herbs

basil

Flowers

Succession sow sunflowers

2021 this month I sowed some celosia flowers

August

You are probably thinking ‘it’s too early to be starting any cool season crops!’ Well, let me share my experience from previous years: I used to start most of my Fall seeds on Labor Day weekend—things like heading brassicas, sweet peas, artichokes, etc. Overall, that turned out to be excellent timing for everything EXCEPT my broccoli, romanesco, and cauliflower.

Brassicas that form heads need a period of cold to grow properly. The idea is to get the plants big enough that, by the time cold hits our zone, they will be ready to form beautiful heads! Therefore, I like to start those vegetables in August.

August 

veggies:

*note: stagger seed starting for these crops. Not all at once.

broccoli (mid-late august)

cauliflower (mid-late august)

romanesco (mid-late august)

cabbage

brussel sprouts

celeriac

flowers:

possibly zinnias and sunflowers

stock

snapdragons

sweet peas

 

 

Herbs:

parsley

basil

You can use this opportunity to start some “second wave” summer plants. Since our summer temps last well into October, many of these plants will still be able to produce.

◊Don’t forget to purchase your seed garlic!

September

We have made it! This is the major push for starting cool season crops from seed. Last year I started peas of all kinds, leeks, calendula, asian greens, kale, cabbages, and lettuces (only ones that form heads) at this time and was so pleased with the results. In fact, the only thing I would change is to start MORE. I had forgotten some vital veggies like bok choy.

September

Broccoli

Cauliflower

Romanesco

Late September *if cool enough

veggies:

leeks

onions

celeriac

napa cabbage

various asian greens

ALL cabbages

artichokes

various peas (both shelling & snap) *or wait one more month

kale

bok choy

heading lettuces (romaine, lolla rossa, salanova)* if cool enough

flowers:

snapdragons

scabiosa

 

cornflowers (bachelor button)

sweet pea flowers *transplant in october

calendula

chamomile *started September 26th, did well.

stock

pansies 

herbs:

cilantro

dill

parsley

chives

 

CHECK OUT my Fall & Winter Gardening Guide

October

October is filled with so many cool seeds. First off, I sow my fava beans directly in the soil (for some reason I don’t have issues with them and bugs) at the beginning of the month. Second, it is garlic planting month!!!

Refer to September’s list plus…

 

Fava beans

 

Garlic-please see my information on planting and growing garlic in our climate.

 

Sow anything on the list from September (especially if September was too hot).

 

Around this time it is cool enough to start succession sowing carrots, radishes, beets, turnips, etc. *Refer to my Succession Sowing Interval Chart in the Garden Resources Library for subscribers and read How to Succession Plant to Maxmimize Your Harvests.

 

October 20, 2020 I planted out ranunculus corms, daffodil bulbs, and anemone corms undeground. They bloomed beautifully! Get the guide -> HERE.

Fall sow poppy seeds for early Spring bloom.

 

November

This is when I usually heave a sigh of relief. There is no more major seed starting, the garlic is in the ground, and the weather starts to cool down. We are well on our way to being able to sit back and enjoy the Winter garden. As things slow down, I start to let my imagination run wild—dreaming of next Spring’s garden plans.

November is the month of direct sowing. *remember my notes on direct sowing above*

Continue to sow these items as needed:

carrots

radishes

kohlrabi

beets

turnips

salad mixes

*Don’t forget to refer to my succession sowing interval chart in the Garden Resources Library.

 

bok choy

joi choi

any greens you love

Transplant leeks and onions starts into the garden

Planting flower bulbs (daffodils, ranunculus, anemones, tulips) now will let them have some time underground to chill before coming to life in Spring. *bulbs tend not to perform well in zone 10b but I still plant some. You can try putting tulip bulbs in the fridge 4 weeks before planting to help trick them into thinking Winter has passed.

December

Last December brought some refreshing rain. One of my favorite things to do is watch all the delicious greens dripping in raindrops. This time of year I usually start immersing myself in seed catalogs and planning the Spring garden. Most of the gardening tasks involve cleaning and ordering. Last year I did start my pansies inside during this month, and they performed so well for Spring that I decided I would do it again.

Things to do in garden:

Spring garden planning & layout

Succession sowing

Read Things to Consider When Buying a Fruit Tree and look at local nurseries for bare root fruit trees and roses. It’s time!