Root Boost

Tiny Fungi, low-key running the root world

'Cause I've Got Friends in Low Places

 

Root Boost is a once-a-year root enhancer made with mycorrhizal fungi that form a symbiotic bond with your plant’s roots.

These beneficial microbes wrap around your plant's roots and then expand into the soil to create a nutrient-hunting network—helping your plant absorb more water and minerals than it could on its own. 

It’s ultra-concentrated, filler-free, and made to deliver serious results with just a tiny dose. Stronger roots, faster growth, and a seriously well-connected houseplant.

Builds Stronger Roots
Expands Root Reach Underground
Boosts Water + Nutrient Uptake
Speeds up Healthy Growth
Creates a Root + Fungi Partnership
Pairs with Everything

Sprinkle Root Boost directly on the soil or mix into the root zone during repotting.

Water after applying to activate the fungi.

Apply every 12 months or after plant stress (like overwatering, repotting, or root rot.)

750 spores/g R. irregularis

$32.50

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon

Tiny Fungi, Low-Key Running the Root World

black smily face icon
Hand holding Happy Happy Houseplant "Root Boost" in a red and yellow ice cream carton-style container against a backdrop of large Monstera leaves.

Secrets Beneath the Soil

Spotted: A perfectly average pothos… now throwing out new leaves like it’s spring break and she’s got something to prove.

The rumor? She’s on Root Boost.

These beneficial fungi fuse with her roots and launch an underground takeover. Building a network and branching through the soil to find nutrients and water her roots could never reach alone.

And the plant? She’s glowing. Growing. Out here starting drama with the fiddle leaf next door.

Looks like someone's got friends in low places.

Might be time to start shopping for a bigger planter, growth like this doesn't stay in a starter pot for long.

xoxo,

Green Girl

🤝🤝💪🤸‍♀️✨✋⬇️💥👋👋👋✋✋🤝👇👯‍♀️👯‍♀️🧍‍♀️🙇‍♀️🤸‍♀️🤝

(that's the Parent Trap handshake in emojis)

-Your plants and their new found fungi sisters

Happy plants zero guesswork
Happy plants zero guesswork
FAQs
Root Boost is a concentrated dose of mycorrhizal fungi—microscopic organisms that partner with your plant’s roots to help them absorb more water and nutrients. It’s basically a ride-or-die bestie for your root system.
The fungi wrap around and even grow into your plant’s roots, then expand into the soil like an underground nutrient-hunting network. They fetch phosphorus, water, and minerals your plant couldn’t reach alone, and in return, your plant feeds them sugar. It’s mutual love and carbs!
Use Root Boost when you’re introducing to all of your houseplants, potting a new plant, repotting, or trying to support a struggling plant. It’s especially helpful when you’re trying to encourage root growth or give your plant an extra advantage in recovery or growth.
Nope! Root Boost isn’t like fertilizer. Mycorrhizal fungi only need to be introduced once per root system. After that, they’ll keep living and growing as long as the soil conditions are right.
No—it works with fertilizer, not instead of it. Think of Root Boost as the assistant manager who helps your plant use fertilizer better. We recommend pairing it with our Plant Food for maximum glow-up.
Almost all! Root Boost works beautifully on most common houseplants, but it’s not beneficial for plants in the Brassicaceae family (like cabbage, mustard, or broccoli). But let’s be honest—those probably aren’t in your living room anyway.
No problem! It won’t hurt your plant—it’s just not necessary to use it more than once unless you’ve repotted or disturbed the roots.
Yes! All our products are designed to play nice! In fact, Soil Refresh helps break down gunk in the soil, which makes nutrients more available to the fungi, and Hydration Renew keeps everything evenly moist so your fungi friends can thrive.
Root Boost is made from natural mycorrhizal fungi and contains no harmful chemicals, but like all soil additives, it should be kept out of reach of curious mouths (plant or human). Use it as directed and store it safely.
You’ll start to see signs like stronger growth, better root development, and overall healthier, happier plants. It’s not flashy—but the results are undeniable. Give it time, and let the roots do the talking.

Customer Reviews

Overall rating: 4.9 / 5 from 104 reviews.

Customer photo review of Root Boost

I love everything about this company. I came across them on IG and fell in love with the owner and her vibrant silly crazy plant lady personality. I was so excited to support Happy Happy Houseplant by ordering my new plant care kits. I had some plant that had grown dormant and it didn’t know what to do to get them to grow. With all my new plant elixirs, my plants have never been happier and are thriving!

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Customer photo review of Root Boost

My plants are loving the products using to make them grow well!

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Customer photo review of Root Boost

I used this product for my big fiddles when repotting two of them in a big pot. They are doing amazing.

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Customer photo review of Root Boost

We moved a year ago in February. We live in Indiana so it was very cold. A few of my plants didn’t survive. I tried to doctor them back to health but they didn’t survive. A few slowed way down on the growth.. when I ordered your line of products and started using them with each watering., they began thriving in ways I haven’t seen before! Then I bought your root boost and my Monstera put on a new leaf!! I usually get one leaf per year. Also I decided to cut my ficus rubber tree in order to get it to fill out and it’s doing so well! I can tell a huge difference with my plants especially after the freezing cold move they had to endure. Thank you for having the best products for my plant babies!

Root Boost

Customer photo review of Root Boost

My aloe plant had tiny roots. I used root boost and they are growing better now and there’s new growth on it!

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Customer photo review of Root Boost

I don’t know what kind of magic is in this but it’s giving my fiddle leaf fig new leaves so I am loving it.

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Customer photo review of Root Boost

I love root boost. This is 1 month of growth after including root boost to my plant’s life. Pairs perfectly with plant food (which I’ve been using since 2022!) love love love these products!

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Customer photo review of Root Boost

I was always a plant killer, for years I stayed away from plants. Within the past year I have really become a lover of plants. I have been buying plants, reading and learning from your Instagrams on how to take care of them. It has been so rewarding watching them grow and taking care of them! Every morning I check each plant, I love it!

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Customer photo review of Root Boost

This tree was full of dead leaves, and I was determined to bring it back to life. It has new leaves coming in !!! im so excited to see it flourish

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Customer photo review of Root Boost

All of my plants currently have new growth from the repot and boost!!!

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Customer photo review of Root Boost

I love all the products I’ve gotten from happy happy houseplant so far! I probably wouldn’t be so inspired to continue planting if I didn’t have these products to help my current ones thrive.

Root Boost

Customer photo review of Root Boost

I started using my root boost for my older plants. It has been two or so weeks now, and I can see new shoots on my plant. It was also due for repotting and some soil refresh. Next on my list is to try soil refresh product from Happy Happy Houseplant!

Root Boost

Customer photo review of Root Boost

Starting using it as soon as it came out. Can't say for all my plants, but the one I really wanted/needed it for was my Fishtail Palm in my office, which was struggling some. After a few months, I decided to repot it to a larger pot to get the trunk lower in the soil, and to my surprise, it was rootbound! First picture is latest picture I have and the second one is prior to using the new products including the root boost.

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Hi, Just making sure that root boost is only used when you repot your plant? Is this correct? This is my first time using your products so I want to make sure I’m using it correctly. By the way your packaging is wow!!!!! The only reason I gave it 4/5 stars is because I just repotted all my plants in April and I’m still waiting to see the effects. Thank you, Olga

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I am hopeful that this will help some of my struggling plants! Super easy to use/measure. Would recommend!

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This product has helped my my houseplants a lot! It has really helped one that was struggling with a weak root system. It looks so much healthier!! I wish I had a before and after picture.

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My plants definitely seem to like this. I’ve sprinkled some in each of my plants, over 100. They seem happy. All are growing wonderfully

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Adding a sprinkle of this when I repotted some plants and they seem to be thriving and not stressed out. Works great in combo with other Happy Houseplant products.

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I’ve been building my indoor plant family for 2-3 years. Thankful to have found your products to help me succeed especially with my fiddle leaf fig and monstera!

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I got the bundle and have absolutely adored all of the products. They are super easy to use, and immediately delivered with new growth on many of my plant babies.

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My plants shot off with new growth after beginning the system! I do wish that the label sticker would stay on the glass bottles better.

Root Boost

After moving in February when it was 20 below, my plants took a huge hit just being carried to the warm waiting van for transport. After I got them settled in my new place so many of them lost all or most of their leaves. It was then I tried Happy Houseplant… a last chance effort, a holy grail. Root boost, hydration boost, plant food, and soil refresh. Now 10 weeks later, I have so many new leaves, tons of grow points, and my plants are looking better than before I even moved. I’m honestly so very very thankful.

Root Boost

The plants all love every single product! Root boost has been great for the spring repots, and the plant food, hydration renew, soil refresh and death drops and sticky traps keep the new growth coming, the soil sparkly and the gnats packing! It’s so convenient and easy to add drops into a watering can. I recommend these products to everyone I know who has houseplants :)

Root Boost

Root boost is doing a great job bringing my plants back to a healthy place after this cold winter!

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I love all Happy Happy Houseplant products! Every plant is shooting off new growth and zero shock when transplanted.

Root Boost

I don't know what goes on down there, roots crowding each other out or something...Root Boost takes away that concern and my plants roots will have room to breath and grow, and I have the guidance to know how to make that happen.

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I love Root boost. My plants have produced lots of new growth since using it. Highly recommend.

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Loving the root boost. Definitely helps my plants bounce back quickly after repotting. The switch from root development to pushing new leaves is so much shorter and my plants love it!!

Root Boost

So blessed by your products! My plants doubled in size. Immediate results. Have fungus and gnats under control. So happy with biweekly routine. I wish I would have thought to do before and after photos. But I can tell you I saw a change in just 24 hours. You are a genius

Root Boost

I had 3 plants that were drooping, I mean almost laying down. This product saved them. I was so happy! Love this stuff!

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I have seen leaves change to a brighter green ovrenight!

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Since I have received and started using root boost, my plants have appeared happier and healthier. New leaves and growth are clearly visible!!

Root Boost

My plants seem to come alive after the first use. I will monitor growth.

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Love it! My houseplants are so happy!! Will be a repeat purchaser

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This has been so helpful to my fiddle in particular!

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So good so far! I repotted 18 pilea babies and they all survived because I added the root boost.

Root Boost

This has made such a difference with my monstera! She’s happy and healthy

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This is perfect when transplanting! Keeps my plants from shock! 🥰

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My snake plant was in need of a repot (it was still in the soil when I rescued it from HomeDepot) so I ordered some root boost and replanted in my kitchen (December in Minnesota.) Along with Root Boost at it's feet, when I do water it gets a dose of Hydration Renew and your Plant Food and it's thriving along with the rest of my small jungle. Thank you Happy Houseplants! LOVE all of your products!

Root Boost

I received a beautiful fiddle leaf fig plant in my new house as a gift, but it was clearly not thriving after a month of being here. In fact, it was dropping leaves and I was convinced I was going to lose it. I bought root boost and added it, and it completely turned things around! Leaves stopped dropping and turned much greener and I think she’s going to make it. Root boost is a lifesaver!

Root Boost

New leaves
give you endorphins. Endorphins make you happy. Happy people just don't shoot their husbands.
pink smiley face icon
They just don't.

Cheering you on forev- Mandi
Cheering you on forev- Mandi