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Mark Tavis

Mark Tavis is the pen name of Plant Blueprint's founder and editor, a plant enthusiast and researcher (not a professional horticulturist). Every guide is built from university extension services, botanical gardens and the ASPCA, with sources linked so readers can check them.

How to Get Hoya Carnosa to Bloom: Light, Spurs and Patience

October 19, 2026May 24, 2026 by Mark Tavis
Hoya Carnosa

The Lab | How to Get Hoya Carnosa to Bloom The wax plant, Hoya carnosa, makes round clusters of star-shaped, waxy, pale pink flowers that … Read more

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Sansevieria Cylindrica Care: Watering, Braids and Pups

October 19, 2026May 23, 2026 by Mark Tavis
Sansevieria cylindrica care African Spear Plant showing perfect cylindrical leaf morphology and structural rigidity from proper CAM photosynthesis light requirements and volumetric hydration

The Lab | Sansevieria Cylindrica Care The cylindrical snake plant, still sold as Sansevieria cylindrica but now classified as Dracaena angolensis, grows stiff, round, spear-like … Read more

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Monstera Light Requirements: PPFD, Lux and DLI in Numbers

October 21, 2026May 22, 2026 by Mark Tavis
Monstera light requirements: light meter measuring PPFD above a large split Monstera leaf

The Lab | Monstera Lighting Monstera light requirements come down to one rule: bright light without harsh direct sun, and more of it than most … Read more

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Lechuza PON: How to Switch Plants Without Root Rot

October 12, 2026May 20, 2026 by Mark Tavis
Lechuza Pon semi-hydro transition - amended mineral substrate in clear pot showing root zone aeration

The Lab | Lechuza PON Semi-Hydro Lechuza PON is a purely mineral substrate (pumice, lava and zeolite with a slow-release fertilizer) that you can use … Read more

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Pythium Root Rot Treatment: What Really Works Indoors

October 22, 2026May 18, 2026 by Mark Tavis
Pythium root rot treatment showing surgical debridement of black mushy roots and hydrogen peroxide sterilization of remaining white roots

The Infirmary | Pythium Root Rot Pythium root rot treatment for houseplants, like any root rot treatment, comes down to three things: get the plant … Read more

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White Crust on Houseplant Soil: What It Is and How to Fix It

October 22, 2026May 16, 2026 by Mark Tavis
"White crust on houseplant soil showing mineral salt buildup on terracotta pot rim with brown leaf tip burn on Monstera

The Pantry | White Crust on Soil A hard white crust on houseplant soil, sometimes called a white mineral crust, is almost always a build-up … Read more

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Synthetic vs Organic Fertilizer: Which Is Better Indoors?

October 19, 2026May 15, 2026 by Mark Tavis
Synthetic vs organic fertilizer for indoor plants comparison showing liquid mineral fertilizer and organic fish emulsion side by side on a plant shelf

The Pantry | Synthetic vs Organic Fertilizer Should you feed your houseplants a synthetic fertilizer or an organic one? Start with the fact both camps … Read more

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pH Lockout in Houseplants: Signs, Causes and Simple Fixes

October 15, 2026May 14, 2026 by Mark Tavis
ph lockout houseplants nutrient and Monstera leaf showing interveinal chlorosis and nutrient lockout symptoms from incorrect substrate pH with digital pH meter testing soil slurry

The Pantry | pH Lockout in Houseplants “pH lockout” (or nutrient lockout) means a plant can’t take up nutrients that are present in its soil, … Read more

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Mycorrhizae for Indoor Plants: Do Houseplants Need Them?

October 19, 2026May 12, 2026 by Mark Tavis
mycorrhizae for indoor plants root ball dusting application with endomycorrhizal powder

The Pantry | Mycorrhizae for Houseplants Mycorrhizae for indoor plants are beneficial fungi that partner with roots: as Clemson Extension puts it, they form relationships … Read more

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Data-driven botanical protocols and scientific troubleshooting for the modern grower. We simplify plant biology into actionable blueprints for high-performance urban gardening.

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