My #1 Secret To Grow Huge Cauliflower

My Green Garden
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Aug 2, 2026
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Video Summary
AI GeneratedNicole Burke shares her discovery for successfully growing large, organic cauliflower heads by utilizing shade to create a microclimate. By planting in a shadier area, she prevented the plants from bolting due to rising temperatures, allowing them the necessary 90 to 100 days to mature without the stress of excessive heat.
If you've ever tried to grow cauliflower
and not been successful,
then you're gonna wanna watch this video
because I have finally unlocked the secret
to growing a huge, beautiful cauliflower head.
My name's Nicole Burke
and I've gardened in three different climates,
from the heat of Houston, Texas,
to the cold of Chicago, Illinois,
now in the milder climate of Nashville, Tennessee.
And it has been so hard for me
to grow a huge, beautiful, organic cauliflower head.
But this season, I finally unlocked the secret.
Now, cauliflower is in the brassica plant family
and brassicas generally prefer cooler weather.
So things like kale, broccoli, Brussels sprouts,
all of those plants are in the brassica plant family
and they all love to grow when it's cold,
cauliflower included.
So the hard thing with cauliflower
is getting the timing right
because this plant is gonna need 90 to 100 days
from little seedling to huge cauliflower head.
And it needs 90 to 100 days at a certain temperature.
It really doesn't want for the weather to get too hot,
but it also needs to be warm enough
to get the plant to start photosynthesizing and growing.
So this year, I think I unlocked the secret
and it was the place of my plant
and the time I planted it.
So I started about two and a half months ago
with a tiny little plant right here in my back two beds.
If you've followed me for any amount of time,
you know that I always teach to put the garden
on the south side of a tall structure,
but I actually break that rule in my garden
because right there are a ton of tall structures,
otherwise known as trees.
They're on the north side of that tall structure.
So I've got these two beds in my garden
that are almost completely shaded by trees
from the beginning of winter
all the way until summer solstice.
You can see how they're just starting to get
a little bit of dappled light on them.
So for the last two and a half months,
as these cauliflower have grown,
these two beds have been completely in the shade
from sunup to sundown.
And I think that has been the secret.
In my front two beds, I've been growing broccoli heads
and broccoli is in the same plant family.
It grows the exact same way,
got 90 to a hundred days to go from seedling to huge head.
And those broccoli, they were ready about two, three,
even four weeks ago,
I started harvesting my first broccoli.
The temperatures have risen to be in the mid eighties.
We've even hit the nineties for a few days.
And so all those broccoli heads that are in full sun,
they've now bolted.
The moment to harvest them,
I had like a split second to catch my broccoli at its prime.
Then the weather got too hot.
The broccoli got too hot and it all went to flower.
Meanwhile, the cauliflower has just been
slowly trucking along back here in the back garden,
planted at the exact same time,
but much slower to form a head,
which makes absolute sense
because there's a lot less sun back here.
I had pretty much given up on these cauliflower
and thought, oh, there just wasn't enough sun.
And this is not going to be a successful crop for me.
But then over the last five or six days, I've been gone.
We've had a ton of rain.
So I haven't been out to the garden.
And today when I walked out,
I have cauliflower heads forming
on almost every single plant.
This one especially is huge and beautiful
and ready to harvest.
And I thought, this is the secret.
If you don't live in a mild climate,
someplace like California,
where the weather is steadily in the seventies,
day after day, never getting too hot,
never getting too cold.
If you're not in a climate like that,
but you still want to grow a plant
like a cauliflower or a broccoli,
something that takes 90 to a hundred days,
but often it gets too hot too fast,
then plant these plants in a shadier spot.
What this does for you is it gives you
a little microclimate.
Even as the temperatures rise,
even as summer comes on a little too quickly,
this shade gives these two beds
a totally different temperature.
The soil in these two back beds
is probably five to 10 degrees cooler
than the soil in my front beds.
And that gives this cauliflower just enough time
to fully form a head, look beautiful,
and give me a ton of delicious food.
When it comes to growing cauliflower,
the setup and the timing is so important.
That's what I teach in my garden game plan workshop.
In this class, it's about 30 minutes long,
and I teach you how to get the setup timing
and the planting right in your garden.
If you want to join me,
there's a class happening this week.
Find the link right below this video.
Now beyond cauliflower,
another really hard thing to get right
in terms of timing and setup is potatoes.
And I made a whole video
showing you how to do it right here.
