Guide
How Much Does a Potted Plant Weigh?
Computed potting mix weight by pot size, dry and saturated, with the pot-volume model and the published density figures it uses.
Reference
The numbers behind every pick
Product roundups go stale. Reference tables do not. These 19 guides are where the arithmetic lives — what a watered pot weighs, what an adhesive hook actually holds, what size pot a plant wants next, how far a grow light belongs from a leaf. Every figure is computed or quoted, and every source is linked.
Start with this one table
Most questions on this site reduce to it. A pot of potting mix is mostly air when it is dry and mostly water when it is not, and the difference is what decides whether a shelf, a hook or a caddy is the right answer.
| Pot size | Mix volume | Dry | Watered | Rating needed |
|---|---|---|---|---|
| 4 in | 0.017 cu ft | 0.4 lb | 0.9 lb | 2 lb |
| 5 in | 0.034 cu ft | 0.7 lb | 1.8 lb | 3 lb |
| 6 in | 0.058 cu ft | 1.3 lb | 3.2 lb | 5 lb |
| 8 in | 0.137 cu ft | 3 lb | 7.5 lb | 12 lb |
| 10 in | 0.268 cu ft | 5.9 lb | 14.7 lb | 23 lb |
| 12 in | 0.463 cu ft | 10.2 lb | 25.5 lb | 39 lb |
| 14 in | 0.735 cu ft | 16.2 lb | 40.5 lb | 61 lb |
| 16 in | 1.098 cu ft | 24.2 lb | 60.4 lb | 91 lb |
The full version of this table, with the model behind it explains where each column comes from and what it leaves out.
Every guide
Guide
The Renter-Safe Hanging Load Guide
A pairing table matching pot size to the adhesive hook rating it needs, plus the application steps that decide whether a hook holds.
Guide
Footprint, Slots and Plants per Square Foot
Plant positions per square foot of floor by stand type, computed from published dimensions, with the shapes that win and the ones that do not.
Guide
How to Organize Plants in a Small Apartment
A room-by-room method for fitting more plants into a small apartment, built around light first, vertical second and floor last.
Guide
How to Hang Plants Without Drilling
The five renter-safe hanging methods, what each holds, and the application steps that decide whether an adhesive hook stays up.
Guide
How to Use a Propagation Station
The full process from cutting to potted plant, with the node rule, the waterline rule and the point at which a cutting should leave the water.
Guide
Where to Put a Propagation Station
How to choose a spot for cuttings in a small apartment, and why the position you pass daily beats the technically ideal one.
Guide
How to Propagate a Monstera
Cutting, rooting and potting a monstera, including the vessel-width problem that catches most first-time propagators.
Guide
Do Planters Need Drainage Holes?
What happens in a pot with no drainage, why a gravel layer makes it worse rather than better, and the cachepot method that fixes it for free.
Guide
Nursery Pot Size Chart
Nursery pot sizes by measured diameter with computed soil volume and watered weight, and why trade gallon labels are unreliable.
Guide
What Size Pot Does My Plant Need?
How to size a pot to a plant, when repotting is actually due, and what each size step costs in weight once the mix is watered.
Guide
How Far Should a Grow Light Be From a Plant?
The inverse-square arithmetic behind grow light placement, what each extra inch costs, and how to read the signs that a light is too close or too far.
Guide
How to Set Up a Grow Light Shelf
Retrofitting LED bars to an existing shelf: mounting, spacing, timers, power and the free reflectivity upgrade most people skip.
Guide
Plant Stand Ideas for Small Spaces
Eight underused positions in a small apartment, each matched to a stand shape, a footprint and a realistic pot size.
Guide
How to Propagate a Snake Plant
Water, soil and division methods for snake plants, with the variegation catch and a realistic account of how long each takes.
Guide
How to Build a DIY Propagation Station
Three propagation station builds from parts, with the components each needs and an honest account of which are worth the effort.
Guide
Pebble Trays: How to Use One, and What It Can Do
Setting up a pebble tray correctly, the one mistake that turns it into a rot risk, and an honest account of how much humidity it adds.
Guide
Apartment Plants for Beginners
Seven beginner-friendly houseplants sorted by light requirement, with the three purchases that matter more than the plant choice.
Guide
Apartment Plants and Cats
How to check a plant against the ASPCA toxicity list, which common houseplants are and are not on it, and how to put the risky ones out of reach.
Where to act on this
A guide tells you the number. These are the pages where you can do something with it.
- Plant Stands
Floor is the thing you cannot buy more of. These are the stands that hold the most plants per square foot, and the arithmetic for what each one can actually carry.
- Planters & Pots
A pot decides how fast the mix dries, how much the whole thing weighs, and whether the floor underneath survives. Drainage first, looks second.
- Propagation Stations
The cheapest way to have more plants is to make them. Five cuttings take a third of a square foot, which is less space than one pot.
- Hanging & Wall Displays
Everything here works without drilling a hole. We check every published hook rating against what a watered pot in that size actually weighs, because nobody else does.
- Grow Lights & Plant Shelves
One north-facing window is the constraint most apartments cannot design around. Lit shelving is how you get plant positions that are not next to the glass.