United States
Mariah Harman, known by the handle Mariahgrows, is a US-based houseplant and indoor gardening creator whose content focuses on practical care tips, plant styling, and home-oriented inspiration drawn from maintaining a personal collection of 150-plus houseplants.
Total Followers +1.5%
1M
Across YouTube, Instagram, TikTok
Primary Platform
YouTube
161K followers · 16% of audience
Engagement
3.8%
vs. 1.5% category median
Sponsorship Tier
Macro
Est. $11K–$25K / IG post
Parade Home & Garden (syndicated via AOL) spotlighted her expertise, showcasing how to propagate no-soil cuttings as party favors — a sign of growing mainstream editorial recognition.
Her official Walmart storefront includes themed collections such as Houseplant Must Haves, 2026 Spring Planters, Grow Lights, and DIY Terrariums, indicating a formal retail commerce partnership with the mass-market giant.
| Window | YouTube | TikTok | Combined | |
|---|---|---|---|---|
| Last 7 days | +1K +0.6% | +2K +0.3% | +599 +0.4% | +4K |
| Last 30 days | +3K +1.9% | +11K +1.6% | +1K +0.8% | +15K |
| Last 90 days | +7K +4.5% | +38K +5.4% | +5K +3.4% | +50K |
| Last 365 days | +7K +4.5% | +38K +5.4% | +5K +3.4% | +50K |
Daily follower snapshots from CreatorDB's longitudinal index.
Mariah Harman, known by the handle Mariahgrows, is a US-based houseplant and indoor gardening creator whose content focuses on practical care tips, plant styling, and home-oriented inspiration drawn from maintaining a personal collection of 150-plus houseplants. Operating across YouTube, Instagram, and TikTok, she posts with a consistent cadence and frames her expertise through lived experience rather than a formal horticulture background — an approachable stance that resonates strongly with dedicated plant hobbyists. Her engagement rates run well above category medians across all three platforms, signaling an audience that actively participates rather than passively scrolls.
Her audience demographics carry a notable signal: despite operating in a niche often associated with younger, female-skewed followings, her viewers tilt heavily toward the 45-and-older bracket and lean roughly 70% male — suggesting the content attracts committed enthusiasts seeking practical cultivation guidance as much as aesthetic inspiration. Recurring references to Etsy's creator collective and grow-lighting topics point toward brand alignment with plant-supply, home-goods, and specialty tool categories that serve serious hobbyists rather than casual decorators. As she moves into a new parenting chapter, her content universe has natural room to expand toward family-home gardening, potentially widening her brand partnerships while maintaining the tight, high-engagement community that anchors her current positioning.
Mariahgrows reaches an audience concentrated in United States primarily through YouTube, and is best activated via long-form YouTube integrations, Instagram Reels and Stories, TikTok branded content. As a gardening creator they map naturally to brands targeting that space. With no brand deals logged yet, they read as an available, category-aligned partner for advertisers building early presence in the space. Engagement on YouTube runs around 3.8%, which points to an audience better suited to category-relevant, mid-funnel campaigns than to pure-reach buys. The channel's mix of long-form YouTube integrations and Instagram Reels and Stories lets a sponsor choose between short awareness placements and longer, more detailed integrations. Because the audience follows gardening content rather than arriving through untargeted reach, sponsorships that match the channel's subject matter tend to convert more efficiently than broad placements. A consistent, on-topic posting focus gives sponsors a predictable, brand-safe environment, lowering placement risk compared with broad, general-interest channels. Campaigns here are best measured on qualified engagement and consideration within the niche rather than on raw impression volume. For United States-focused brands in gardening and related categories, Mariahgrows offers a defined, creative-fit audience rather than broad, low-intent impressions.
Benchmark estimates for a creator at Mariahgrows's tier (Macro, 1M combined followers, United States). Pulled from CreatorDB's category benchmarks.
The CreatorDB Agency runs end-to-end influencer campaigns globally — shortlisting, outreach, contracting, and performance reporting. Talk to our team about building a campaign around creators in this niche.
Her name is Mariah Harman. She operates across YouTube, Instagram, and TikTok under the handle @mariahgrows, a name that doubles as a play on her first name and the act of growing plants. Her business email, listed publicly on Instagram, confirms the Harman surname.
Yes, Mariah recently welcomed a child. Her YouTube bio describes her as a "plant mom, dog mom, and most recently human mom," signaling she became a parent and now balances new family life alongside her houseplant content. It's a running theme she's woven into her channel identity.
Mariah cares for over 150 houseplants in her home, which she lists as a defining fact about herself in her YouTube bio. That collection drives the bulk of her content — from individual plant care tips to full shelfie styling walkthroughs.
The name is an intentional double meaning: it combines her first name, Mariah, with the word "grows," nodding to both her plant-growing hobby and her expanding community. It's a clean brand identity that covers houseplants, gardening, and home decor without locking her into a single species or style.
Yes, Mariah tags her content with #etsycreatorcollective, indicating she's an official partner in Etsy's creator program. Her Instagram bio also links to her favorite plant products, suggesting she curates or sells plant-related items through the platform.
Circadian lighting refers to indoor light systems that mimic the natural rise-and-fall cycle of daylight, which helps houseplants grow more consistently indoors. Mariah regularly uses #circadianlighting as a content tag, making it a recurring focus in her grow-light and plant setup videos.
Yes, she describes herself as a "dog mom" in her YouTube bio alongside her plant and human parenting roles. Her home-based content occasionally features her everyday life, with pets as part of that backdrop rather than the main subject.
Mariah blends practical houseplant care tips with home décor styling, covering topics like how to display plants, which grow lights to use, and general plant-keeping tricks. Her YouTube content is classified under gardening and home décor how-to, and she's known for "plant shelfie" aesthetics alongside hands-on growing advice.
Mariah posts regularly on YouTube, Instagram, and TikTok, uploading to each platform within the last few days as of late 2026. Instagram is her largest platform by follower count, but her YouTube channel carries the highest engagement rate of the three.
Mariah is based in the United States, and the overwhelming majority of her audience is also American. Her indoor gardening and home-styling focus resonates particularly well with U.S. audiences interested in houseplants and apartment or home décor.
Stats (followers, engagement, audience demographics, growth) are pulled live from the CreatorDB API covering YouTube, Instagram and TikTok. Bio and FAQ content is AI-assisted; news items are sourced from cited public press at generation time. Read the full methodology →
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@mariahgrows · YouTube
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