While brussels sprouts may get a bad rap in some culinary circles, they don’t fare so poorly in my household.
On the contrary, my family will happily wolf down an entire pan of brussels without a second thought, particularly if they are glazed in maple syrup and accompanied by bacon.
I consider brussels sprouts – members of the Brassicaceae family – to be a real delicacy, slow to mature and expensive to buy. In my opinion, they are one of those veggies that is much tastier when picked fresh from the garden.
That is why I prefer to grow and harvest my own.
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While you may be inclined to feel intimidated by these strange towering stalks with their funny little edible buds we refer to as sprouts, the process of harvesting brussels is actually not too complicated.
Let’s get picking!
Maintenance and Pruning: A Little Goes a Long Way
If you want to get a decent harvest, there are a few important tips and tricks to know about the growing process.
Brussels sprouts take a long time to mature. During the long waiting period, doing a little bit of careful pruning can help you maximize your yield.
Throughout the growing season, observe your plants regularly and strip off any leaves that start to turn yellow.
If you choose, you can actually remove all of the lower leaves regardless of whether they are beginning to lose color. This will speed up the time they take to mature by encouraging the plants to direct energy towards producing buds.
Just be sure to always leave some of the larger upper leaves on the plant. It is necessary for the plant to retain some of its foliage for photosynthesis.
No need to toss what you’ve picked in the compost pile. Instead, you can save these young, tender leaves and cook them up!
Comparable to collard greens in texture, with a flavor reminiscent of kale, the baby leaves are quite yummy in a simple stir fry.
The larger, older leaves will tend to have a more bitter taste.
Your plants may also be pruned by a method known as “topping.”
Topping is the process of cutting off the growth tip of the plants when the buds are still immature.
This can also increase bud production, allowing a plant to put its energy into increasing the size of its buds rather than creating new leaves.
The best time to top the plants is in late summer, 4-6 weeks before the first expected harvest. To do this, cut off the growth tip where new leaves are forming at the top of the plant, above the first developing sprout.
For more detailed information on how to propagate and grow brussels sprouts, check out our growing guide.
When to Harvest
These crunchy cruciferous vegetables are a cool weather crop. They can survive some frost and snow, and in warmer climates can even survive the winter without any additional protection.
The best time to harvest is in the fall, after the plants have been touched by a few light frosts.
Frost actually improves their flavor. This is because the drop in temperature triggers the plants to devote energy to producing sugar.
Starch in the cells is broken down by specific enzymes into sugars. These sugars act as a natural antifreeze by lowering the freezing point of the liquid in the plant cells. This simultaneously protects them from frost damage and makes them taste sweeter.
These plants take a long time to mature, sometimes over 100 days, depending on the variety, so patience is key. You want to pick them before the buds start to turn yellow and begin to open.
They should be firm, bright green, and about 1 to 1.5 inches in diameter.
You do not need to harvest all of the sprouts at once. All of the sprouts on a stalk will not mature and be harvest-ready at the same time.
As soon as at least a few are fully developed you can begin harvesting. As you pick them off, new ones will continue to form on the plant.
You can continue to harvest as long as there are sprouts on the plant. As the weather warms up, the plant will eventually bolt and no longer produce buds.
How to Harvest
Brussels sprouts mature from the bottom of the plant upward, so the lowest ones will be ready first. When harvesting, start by picking those that are lower on the stalk, and work your way upwards.
Twist or snap off the buds, or cut them with a knife at the base where the sprout meets the stem. Be sure to pick them before they start to turn yellow, as they will become bitter and tough.
The early harvests won’t be as flavorful as those that have been exposed to a sweetening frost or two.
If you didn’t top the plant or prune the lower leaves earlier, you will want to do some tidying up as you harvest.
Removing the lower leaves below the sprouts you’ve picked will encourage the plant to grow upwards and continue to produce new buds. As you harvest, continue removing the leaves below the sprouts you pick.
As you pick them, new ones will develop quickly, but growth and production of new buds will slow as the weather gets colder. Growth will stop if you have a hard freeze and sustained temperatures below freezing.
You can also choose to wait until a stalk is covered in mature sprouts and cut the whole thing down at once. To do this, either take a sharp knife and cut the stalk as close to the ground as possible, or grasp the top of the stalk firmly and pull it out of the ground.
After you’ve got the stalk out of the ground, simply twist or cut off the individual sprouts, discarding any that are yellowing or rotten.
Did you know that you can also eat the fibrous stalks? You just have to remove the woody outer layer and you can cook them just like you would a broccoli stalk. Or throw them in the pot the next time you make a vegetable stock.
Learn more about making soup stocks on our sister site Foodal.
To prolong your harvest, or in the case of later plantings, it is possible to overwinter your crops in the garden.
To do this, mulch heavily around the base of the plants prior to a deep freeze. Place a thick layer of straw or hay in mounds up to the top leaves, moving the mulching material out of the way when you want to harvest.
The mulch will protect your plants from the freezing and thawing cycles that cause cell breakdown and rot.
If it snows before a deep freeze happens, the snow itself will act as insulation for your crop over the top of your mulching material.
Once spring is in the air, however, they’ll quickly bolt and will start forming flower stalks in place of sprouts.
A Delicious, Homegrown Harvest
Homegrown brussels sprouts are delicious, and if you’ve got family members who are not so keen, once they’ve tasted a fresh-off-the-stalk sprout, they’ll never look back.
You could try enticing them with one of my favorites: simple, roasted sprouts – crispy and flavorful, you can find the recipe on our sister site, Foodal.
Why not get the kids involved in the harvesting process? Picking off sprouts or pulling up the odd looking stalks is fun and it’s a great way to encourage them to eat their greens!
Are you growing sprouts in your garden? What’s your favorite way of harvesting them? Let us know in the comments below.
For more information about growing brassicas in your garden, try these guides next:
© Ask the Experts, LLC. ALL RIGHTS RESERVED. See our TOS for more details. Originally published on January 24, 2020. Last updated: March 25, 2021 at 22:54 pm. Uncredited photos: Shutterstock. With additional writing and editing by Clare Groom and Allison Sidhu.
About Heather Buckner
Heather Buckner hails from amongst the glistening lakes of Minnesota, and now lives with her family on a beautiful homestead in the Vermont Mountains. She holds a bachelor of science degree in environmental science from Tufts University, and has traveled and worked in many roles in conservation and environmental advocacy, including creating and managing programs based around resource conservation, organic gardening, food security, and building leadership skills. Heather is a certified permaculture designer and student herbalist. She is also a fanatical gardener, and enjoys spending as much time covered in dirt as possible!