Buyer-first greenhouse guides
Independent research on costs, glazing, brands, base and anchoring, so you buy the right greenhouse the first time.
How to use this hub
Move through the buyer journey in the right order
The mistake is jumping straight to brands. Start with what the project can support, then narrow the right lane, then compare the names that still deserve your time.
Step 1
Budget
Use the cost guide to price the greenhouse, the base and anchoring, and the site prep together.
Step 2
Greenhouse Type
Start with the fastest buyer-first selector before you fall into brand research.
Step 3
Installation
Base, anchoring, and ventilation decide more projects than brand copy does.
Step 4
Shortlist
Use the shortlist pages once you already know the lane that fits your home.
Step 5
Comparison
Use the versus pages when your shortlist is finally small enough to matter.
Step 6
Final Decision
Use the flagship buying guide as the final decision page before you buy.
All guides
Filter by buyer journey stage, topic, or search to find exactly what you need.
Palram vs Exaco Riga vs Janssens: Best Value All-In (2026)
Kit, base, vents, warranty and parts priced side by side for the Palram Glory 8x12, Exaco Riga 3 and Janssens Junior Victorian 24. Checked August 16, 2026.
Greenhouse Condensation: Why It Drips, What Stops Mold
Why greenhouse glazing drips at night, what humidity causes mold, and whether a $22 fan or a $180 dehumidifier fixes it. Sourced from UMass, RHS, Penn State.
Overwintering in a Greenhouse: What Survives, What It Costs
What actually survives an unheated greenhouse, which plants need 40F or more, and what each temperature tier costs to hold. Sourced from RHS and extension data.
Alitex Greenhouse Cost: Real 2026 Prices
Alitex publishes real prices, unlike most premium makers. The full 2026 National Trust price list, the $60,000 US floor, and what lands on top.
Greenhouse Season Extension: How Long You Can Grow Unheated
An unheated greenhouse can add 4 to 8 weeks at each end of the season, not a full winter. See what passive protection buys and when heat is worth the cost.
Yoderbilt Greenhouse Review 2026: Cost, Delivery & Warranty
Yoderbilt starts at $3,295 and arrives assembled. Current prices, delivery access, owner evidence, maintenance, warranty gaps, and who should buy one.
Rion Greenhouse Review 2026: Prices, Wind & Verdict
Rion spans $1,739 to $8,699 before the separate base. Model-by-model value, wind limits, assembly reality, warranty ambiguity, and who should buy one.
Exaco Riga Greenhouse Review 2026: Cost, Snow & Assembly
Riga starts at $5,999, but the base is extra. Real 2026 prices, assembly effort, warranty limits, cold-climate strengths, and who should buy one.
Gabriel Ash Greenhouse Cost After the 2026 Closure
Last verified Gabriel Ash prices ran from about £2,400 to £12,250, but the brand closed in April 2026. What remaining stock, warranty and support mean for buyers.
Janssens Greenhouse Review 2026: The Honest Verdict
The Belgian glass Victorian, reviewed independently. Real assembly times, the warranty fine print, conditional wind ratings, and what it costs all-in.
Hartley Botanic Greenhouse Cost: Real 2026 Prices
Hartley Botanic doesn't publish prices. We assembled the real numbers: what buyers have paid, what the quote excludes, and where the project total lands.
Greenhouse Buying Guide: Costs, What Matters, What Goes Wrong
The complete greenhouse buying guide. Real 2026 project costs, glass vs polycarbonate, sizing, base and anchoring, permits, and when to walk away.
Greenhouse Shade Cloth Guide: When Heat Becomes the Real Problem
How to use greenhouse shade cloth without guessing, including heat buildup, glazing, ventilation, crop needs, timing, and why shade is not a substitute for vents.
Greenhouse Pest and Disease Prevention: The Buyer Guide
A practical greenhouse pest and disease prevention guide covering airflow, sanitation, spacing, watering, quarantine, screening, and inspection habits.
Greenhouse Irrigation Guide: Watering Without Drowning Plants
A buyer guide to greenhouse irrigation choices, including hand watering, drip lines, timers, humidity, drainage, crop grouping, and why water is a design decision.
Greenhouse Flooring and Drainage: Gravel, Pavers, Concrete, Soil
Greenhouse flooring options compared by drainage, cost, cleaning, weeds, accessibility, heat, humidity, and long-term maintenance.
Greenhouse Automatic Vent Openers: Cheap Part, Costly to Skip
How automatic greenhouse vent openers work, when they matter, where to place them, and why they are not a substitute for enough vent area.
What Size Greenhouse Do I Need? (2026)
Everyone says buy bigger, and they're mostly right. But a too-big greenhouse costs more to heat every winter. Here's where the line is.
Real Cost of a Greenhouse (2026)
The kit is $8,000. The project is $12,000 to $18,000 once the base, anchoring, and auto vents are in. The line items nobody quotes.
Palram Canopia Review 2026: Honest Verdict
The mid-market default, reviewed straight. Twin-wall to 10mm, 5 to 10 year warranty, and exactly where it falls short of a glasshouse.
Hartley Botanic vs Alitex: Premium Glasshouses
Hartley Botanic and Alitex compared for a new premium glasshouse, plus the current Gabriel Ash closure status buyers need before shortlisting.
How Greenhouses Blow Apart, and Anchoring Done Right
An unanchored greenhouse is a kite. How wind failure happens, what ASCE 7 wind loads mean, and how base fixings and ground anchors keep it up.
Greenhouse Overheating and Ventilation Done Right
An unvented greenhouse hits 120 to 140F and cooks plants by noon. Vent area, roof and side vents, and auto openers that need no power.
Greenhouse Snow Load: Roof Pitch and Collapse
Wet snow weighs 20 lb per cubic foot. Why a flat cheap roof caves, what ASCE 7 snow load means, and the roof pitch that sheds it.
Greenhouse Heating Cost (2026)
Frost-free runs $10 to $120 a month. A warm growing house runs $100 to $600-plus. What size, glazing, and climate do to your winter bill.
Greenhouse Glass Safety: Tempered vs Horticultural
Tempered glass shatters into blunt granules. Horticultural glass throws sharp shards. Why cheap kits use dangerous glass or brittle poly.
Greenhouse Foundation and Base Guide (2026)
Gravel-and-timber, concrete slab, or brick dwarf wall? The base runs $500 to $5,000 and decides whether the greenhouse lasts. The honest breakdown.
Greenhouse Buying Regrets: The 7 Big Mistakes
Too small, cheap glazing, wrong base, no anchoring, no auto vents. The mistakes owners say they would fix first, and how to skip every one.
Glass vs Polycarbonate Greenhouse (2026)
Glass gives 90% light and clarity. Twin-wall polycarbonate insulates twice as well and survives hail. Which fits your climate, honestly.
Do I Need a Permit for a Greenhouse?
Most greenhouses under 120 sq ft skip a building permit, but setbacks, HOA rules, and property lines still apply. The check that stops projects late.
Best Polycarbonate Greenhouses 2026
Twin and triple-wall picks that insulate twice as well as glass and survive hail. Palram, Rion, Yoderbilt, Solexx, and Riga compared honestly.
Best Greenhouses 2026: Premium and Mid Picks
Hartley, Alitex, and Janssens glass against Palram, Yoderbilt, and Solexx. Honest picks by budget, climate, and how you actually garden.
Best Greenhouses for Cold Climates (2026)
Twin and triple-wall poly, real snow-load ratings, and heating that pencils out. The picks that survive a hard winter and stretch the season.
Aluminium vs Wood Greenhouse Frame (2026)
Aluminium is low-maintenance and lets in more light. Wood looks warmer and insulates better, but wants upkeep. Which frame fits you.
Want the full picture?
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