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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.)
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
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.
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!
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!
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!
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!
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.
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!
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.
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
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.
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.
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!
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.
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.
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 :)
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.
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!!
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
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!
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!