The Garden Gear Numbers

Name: The Garden Gear Numbers
Creator: Grow Lab
Published: 2026-07-30
License: https://creativecommons.org/licenses/by/4.0/

Last updated: July 30, 2026 Version 1.0

Garden and lawn marketing runs on vague superlatives — "equivalent watts," "covers 4,000 sq ft," "10-stage." This page is the normalized reference table behind Grow Lab's guides: the actual specs — PPFD, DLI, GPM, deck size, grain-free NPK, root depth, and more — with a source per row. It is a reference dataset, not a buying guide; pair it with a specific product's own spec sheet before you buy.

License: CC BY 4.0 — free to use with attribution.

Grow Light PPFD

Parameter	Value	Unit	Source	Notes
Seedling / clone stage	100-300	µmol/m²/s	Aggregated university extension & horticultural-lighting guidance	General reference band; species vary
Vegetative stage (leafy greens/herbs)	300-600	µmol/m²/s	Aggregated university extension & horticultural-lighting guidance	Mid-intensity band
Flowering/fruiting stage (high-light crops)	600-1000+	µmol/m²/s	Aggregated university extension & horticultural-lighting guidance	High-intensity band; varies by species

Grow Light DLI

Parameter	Value	Unit	Source	Notes
DLI formula	PPFD x photoperiod hours x 0.0036	mol/m²/day	Standard horticultural lighting calculation	Converts an instantaneous PPFD reading to a daily total
Leafy greens target range	10-17	mol/m²/day	Aggregated university extension horticultural-lighting guidance	General reference band
Fruiting vegetables target range	20-30	mol/m²/day	Aggregated university extension horticultural-lighting guidance	General reference band

Grow Light Mounting

Parameter	Value	Unit	Source	Notes
PPFD-to-height relationship	Inverse - PPFD decreases as mounting height increases	qualitative	Aggregated manufacturer PPFD-at-distance charts	Always confirm with the fixture's own published chart

Mower Deck Sizing

Parameter	Value	Unit	Source	Notes
Yard under 1/4 acre	21	inch deck	Aggregated manufacturer sizing guidance	Push or self-propelled walk-behind mower
Yard 1/4 to 1/2 acre	30-42	inch deck	Aggregated manufacturer sizing guidance	Walk-behind or small riding mower
Yard over 1/2 acre	42+	inch deck	Aggregated manufacturer sizing guidance	Riding mower typically justified

Cordless Mower Runtime

Parameter	Value	Unit	Source	Notes
Small-lot battery band	2-4	Ah	Aggregated manufacturer battery/runtime specs	Suits lots under 1/4 acre
Mid-lot battery band	5-7.5	Ah	Aggregated manufacturer battery/runtime specs	Suits 1/4 to 1/2 acre lots
Large-lot battery band	8+ or dual battery	Ah	Aggregated manufacturer battery/runtime specs	Lots over 1/2 acre often need a second pack

Hose Diameter

Parameter	Value	Unit	Source	Notes
Standard diameter	5/8	inch	Aggregated manufacturer garden hose specs	Most common household diameter and fitting size
Wide-bore diameter	3/4	inch	Aggregated manufacturer garden hose specs	Higher GPM at the same pressure; heavier; may need adapters

Hose Flow

Parameter	Value	Unit	Source	Notes
GPM at 5/8in x 50ft (typical residential pressure)	9-17	GPM	Aggregated manufacturer flow-rate specs	Varies with exact household water pressure (40-80 psi)

Hose Burst Pressure

Parameter	Value	Unit	Source	Notes
Quality hose burst rating	350-500+	psi	Aggregated manufacturer burst-pressure specs	Household supply (40-80 psi) is far below this rating

Sprinkler Watering

Parameter	Value	Unit	Source	Notes
General established-lawn target	~1	inch/week	Aggregated university extension turfgrass watering guidance	General reference only; check local extension for your region

Sprinkler Precipitation Rate

Parameter	Value	Unit	Source	Notes
Measurement method	Catch-cup test	method	University extension irrigation guidance	Standard DIY method for measuring actual precipitation rate

Raised Bed Depth

Parameter	Value	Unit	Source	Notes
Shallow-rooted crops	6-12	inch	Aggregated university extension raised-bed guidance	Lettuce, herbs, strawberries
Medium-rooted crops	12-18	inch	Aggregated university extension raised-bed guidance	Bush beans, peppers
Deep-rooted crops	18-24+	inch	Aggregated university extension raised-bed guidance	Tomatoes, squash, carrots, potatoes

Soil pH

Parameter	Value	Unit	Source	Notes
Most vegetables and lawn grasses	6.0-7.0	pH	Aggregated university extension soil-testing guidance	Slightly acidic to neutral
Acid-loving plants	4.5-5.5	pH	Aggregated university extension soil-testing guidance	Blueberries, azaleas, and similar plants

NPK Label

Parameter	Value	Unit	Source	Notes
N - Nitrogen	Guaranteed % by weight	label percentage	US fertilizer labeling convention (state Dept. of Agriculture regulated)	Drives leafy and vegetative growth
P - Phosphorus (as P2O5)	Guaranteed % by weight	label percentage	US fertilizer labeling convention (state Dept. of Agriculture regulated)	Supports root and flower/fruit development
K - Potassium (as K2O)	Guaranteed % by weight	label percentage	US fertilizer labeling convention (state Dept. of Agriculture regulated)	Supports overall plant vigor and stress tolerance

Pruner Type

Parameter	Value	Unit	Source	Notes
Bypass	Two curved blades pass each other like scissors	mechanism	Aggregated manufacturer tool-design specs	Best suited to living green stems
Anvil	Single blade closes onto a flat anvil plate	mechanism	Aggregated manufacturer tool-design specs	Best suited to dead or dry wood

USDA Hardiness Zone

Parameter	Value	Unit	Source	Notes
Zone framework	13 zones (1-13, with a/b half-zones)	classification	USDA Plant Hardiness Zone Map	Based on average annual extreme minimum winter temperature

Seed-Starting Heat Mat

Parameter	Value	Unit	Source	Notes
Temperature offset	+10-20	°F above ambient	Aggregated manufacturer heat mat specs	Relative to room temperature, not an absolute target
Warm-season germination target	70-85	°F soil temperature	University extension seed-starting guidance	Tomatoes, peppers, eggplant and similar warm-season seeds

Caveats — read before citing a number

These are general reference bands, not per-product guarantees. Always check the specific product's own manufacturer spec sheet before a purchase decision.
PPFD and DLI targets vary by species and cultivar — the bands above are widely-used general references, not a guarantee for any specific plant.
Regional data varies. Watering targets, hardiness zones, and frost dates are general references — always check your local cooperative extension office for region-specific guidance.
This table is general reference, not pesticide, chemical-application, or plant-health-outcome advice for any specific plant or property.
Standards and maps get revised. The USDA periodically updates its hardiness zone map as climate data is reanalyzed; this dataset reflects the framework as understood as of the version date below.

How to cite

Grow Lab. "The Garden Gear Numbers." Version 1.0, July 30, 2026. https://grow-lab.pages.dev/garden-gear-numbers/. Licensed CC BY 4.0.

Methodology & versioning

Version 1.0 — published July 30, 2026. Facts are drawn from aggregated USDA and cooperative extension-service publications, industry-standard horticultural-lighting conventions (PPFD/DLI), US fertilizer labeling regulations, and manufacturer specification sheets, cross-checked against our existing guides. We do not field-test equipment ourselves; this is a specifications-and-reference-data page, not a lab result. Corrections: if a figure changes or we find an error, this page and the CSV below are updated in place and the version/date bumped — see How We Evaluate for our full editorial policy.

Machine-readable download: the full table is available as CSV at /garden-gear-numbers.csv (version-pinned copy at /garden-gear-numbers-v1.0.csv), and a condensed digest is maintained in /llms-full.txt.

This page is general reference information about equipment specifications and public USDA/extension data, not pesticide, chemical-application, or plant-health-outcome advice for your specific property or plants.

Frequently Asked Questions

What is The Garden Gear Numbers dataset? ▼

A normalized reference dataset covering the specs that actually decide garden and lawn equipment results — grow-light PPFD/DLI bands, mower deck size to yard size, cordless mower battery Ah bands, hose diameter/GPM/burst pressure, sprinkler precipitation rate, raised bed depth by crop root depth, soil pH ranges, the NPK label decode, pruner mechanisms, the USDA hardiness zone framework, and seed-starting heat mat temperature ranges.

Is this dataset a substitute for a product's own manufacturer spec sheet? ▼

No. This table normalizes general reference bands and industry conventions. Always check a specific product's own published spec sheet (its PPFD-at-distance chart, its exact GPM rating, etc.) before relying on a general band for a purchase decision.

Why does the NPK row not list specific percentages? ▼

Because NPK percentages vary by product and are set by the manufacturer on each bag's label, not by a universal standard number. This dataset documents what the label convention means (N-P-K order, what each nutrient does), not what any specific fertilizer's ratio should be.

Does this dataset include pesticide or chemical-application guidance? ▼

No. This dataset covers equipment specifications and USDA/extension reference frameworks only. It does not cover pesticide selection, chemical application rates, or plant-health-outcome claims — for those questions, consult your local cooperative extension office or a licensed professional.

How current is the USDA hardiness zone data here? ▼

The zone framework itself (13 zones with a/b half-zones, based on average annual extreme minimum winter temperature) is stable, but the USDA periodically updates the zone boundaries/map as climate data is reanalyzed. Always check your specific zone via the USDA's own current lookup rather than a cached regional assumption.