Grower Glossary – HUpdated 8 days ago

H

The Grower Glossary – H explores hydroponics, humidity, harvest, and hormones — the core of controlled cultivation. Every “H” term deepens your understanding of how plants feed, breathe, and finish.

H₂O (Water)

The foundation of all plant life and nutrient transport.

Grower Slang: “Hydro,” “feed water.”

Cronk Tip: Always check pH (5.8–6.5) and EC (0.2–0.4 base) before mixing nutrients.

Habitat (Growing Environment)

The complete ecosystem where your plants live — light, air, temperature, microbes, and moisture.

Grower Slang: “Grow space,” “microclimate.”

A healthy habitat ensures consistent growth and fewer pest problems.

Hair Roots

Fine, threadlike roots that absorb water and nutrients.

Grower Slang: “Feeder roots,” “white fuzz.”

Healthy hair roots = strong uptake and microbial activity.

Half-Life (Nutrient or Pesticide Term)

The time it takes for a chemical compound (like a nutrient, hormone, or pesticide) to break down to half its original strength.

Grower Slang: “Breakdown time.”

Important when using organic pest control or foliar sprays.

Hand Watering

Feeding plants manually with a watering can or hose rather than automated systems.

Grower Slang: “Manual feed,” “hand feed.”

Gives growers close control over volume and frequency.

Hanging (Drying Term)

Suspending harvested branches upside-down to dry slowly.

Grower Slang: “Hang dry.”

Cronk Tip: Ideal conditions — 18–21°C (65–70°F) and 50–60% humidity for 7–10 days.

Hardening Off

Gradually exposing young plants to outdoor conditions after growing indoors.

Grower Slang: “Acclimating,” “toughening up.”

Prevents transplant shock.

Harvest

The process of cutting and collecting mature plants.

Grower Slang: “Chop,” “cut down,” “take her.”

Cronk Tip: Harvest when trichomes are milky with 10–20% amber for best potency and flavor.

Harvest Window

The ideal time frame when cannabinoid and terpene levels peak.

Grower Slang: “Perfect chop time.”

Waiting too long can lead to THC degradation into CBN.

Hash (Concentrate)

A concentrated form of cannabis made by separating trichomes from plant material.

Grower Slang: “Bubble,” “hashish,” “resin.”

Can be made with ice water, dry sift, or mechanical separation.

Hash Rosin

Solventless cannabis extract pressed from bubble hash using heat and pressure.

Grower Slang: “Rosin,” “squish.”

Retains full flavor and terpene profile.

Haze

A legendary sativa-dominant cannabis lineage known for tall structure, long flowering, and uplifting effects.

Grower Slang: “Haze cut,” “Haze pheno.”

Requires patience and high light intensity for full expression.

Headspace

The air gap above plants or within jars used during curing or storage.

Grower Slang: “Jar air.”

Too little = mold risk; too much = overdrying.

Head Stash

Grower slang for personal, top-quality cannabis kept by the cultivator.

Grower Slang: “Personal jar,” “stash.”

Heat Stress

Plant damage caused by high temperatures or excess light.

Grower Slang: “Heat burn,” “light stress.”

Symptoms: leaf tacoing, yellowing, or upward curling.

Cronk Tip: Maintain canopy temps between 24–29°C (75–84°F) with steady airflow.

Heat Mat

A warming pad placed under propagation trays to encourage seed germination or clone rooting.

Grower Slang: “Seed mat.”

Heavy Feeders

Plants that require higher nutrient concentrations, particularly nitrogen or potassium.

Grower Slang: “Hungry plants.”

Cronk Tip: Most cannabis cultivars are moderate to heavy feeders — adjust EC gradually to avoid burn.

Hermaphrodite (Hermie)

A plant that develops both male and female flowers, often due to stress or unstable genetics.

Grower Slang: “Herm,” “nanner.”

Remove hermies immediately to prevent pollination and seed formation.

High-Intensity Discharge (HID)

Traditional grow lighting that uses gas-filled bulbs, like MH (Metal Halide) or HPS (High Pressure Sodium).

Grower Slang: “HID rig.”

Produces strong light but generates heat — LEDs now provide better efficiency.

High Stress Training (HST)

Techniques that involve cutting, bending, or manipulating plants to control shape or boost yield.

Grower Slang: “HST,” “hard train.”

Examples: topping, super cropping, mainlining.

Cronk Tip: Combine HST early in veg with Armadillo Armour to strengthen plant structure.

High Temperature Damage

Overheating that causes enzyme breakdown and photosynthesis slowdown.

Grower Slang: “Heat stress,” “cooked canopy.”

Keep canopy temps below 30°C (86°F) for best results.

High Value Crop

A term used to describe crops like cannabis due to their economic and cultivation value.

Grower Slang: “Premium crop.”

Holding Tank (Hydro)

A reservoir used to store and circulate nutrient solutions in hydro systems.

Grower Slang: “Res,” “feed tank.”

Cronk Tip: Keep tanks shaded, oxygenated, and below 22°C to prevent root pathogens.

Hollow Stem

A condition where the inside of stems develops empty cavities, sometimes from rapid growth or genetics.

Grower Slang: “Hollow core.”

Generally harmless but can indicate high nitrogen feeding.

Home Grow

A personal cultivation setup for small-scale cannabis growing.

Grower Slang: “Tent grow,” “micro grow.”

Cronk supports home growers through educational resources and balanced nutrient systems.

Honeydew (Pest Term)

Sticky residue left by pests like aphids or whiteflies after feeding on plant sap.

Grower Slang: “Sap drip.”

Clean affected leaves and treat pests immediately.

Horizontal Training

Bending and tying down branches to create an even, wide canopy.

Grower Slang: “LST,” “spread training.”

Improves light distribution and increases bud site exposure.

Hormone

Chemical signals within plants that control growth, development, and stress responses.

Grower Slang: “Plant hormones.”

Auxins, gibberellins, and cytokinins are key examples.

Humate

A group of organic molecules from decomposed plant matter that enhance soil fertility.

Grower Slang: “Soil carbon.”

Cronk Tip: Found naturally in PuurOrganics to improve nutrient exchange and structure.

Humic Acid

A component of humate that improves soil health, nutrient chelation, and root growth.

Grower Slang: “Humics.”

Often combined with fulvic acid for complete nutrient activation.

Humidity

The amount of water vapor in the air.

Grower Slang: “RH” (Relative Humidity).

Cronk Tip: Ideal ranges — Veg: 55–65%, Bloom: 40–50%. Use dehumidifiers in late flower.

Humidifier

A device that increases air moisture in dry environments.

Grower Slang: “Humid.”

Essential for seedlings and early veg stages.

Humidistat

A tool that measures and regulates humidity levels automatically.

Grower Slang: “RH controller.”

Hybrid

A plant created by crossing two genetically distinct strains.

Grower Slang: “Cross,” “mix,” “hyb.”

Balanced hybrids combine sativa vigor with indica density.

Hydro Lock (Hydroponics Term)

A clog or air blockage in irrigation lines that prevents even water flow.

Grower Slang: “Line clog.”

Flush lines regularly to prevent buildup.

Hydroponics

A soil-free growing method where roots receive nutrients directly through water.

Grower Slang: “Hydro,” “soilless.”

Cronk Tip: Maintain pH 5.8–6.0 and use air stones for oxygenation.

Hygrometer

An instrument used to measure humidity.

Grower Slang: “RH meter.”

Essential for monitoring grow rooms and drying areas.

Hygroscopic

Describes a substance’s ability to absorb moisture from the air.

Grower Slang: “Moisture magnet.”

Used to describe salts or nutrients prone to clumping.

Hydro Guard (General Term)

Refers to any product or technique that protects roots from pathogens in hydroponic systems.

Grower Slang: “Root protect.”

Cronk Tip: Use Monkey Juice weekly to keep hydro roots clean and alive.

Hyperaccumulator

A plant capable of absorbing high levels of metals or toxins.

Grower Slang: “Metal sponge.”

Relevant in soil remediation or heavy metal testing for cannabis compliance.

Hyperoxia

Excess oxygen levels in nutrient solutions.

Grower Slang: “Over-aeration.”

Extremely rare; balance oxygen with stable temperature and pH.

Hypocotyl

The stem section between seed roots and cotyledons in a young seedling.

Grower Slang: “Seedling stem.”

Stretching here can indicate low light during early growth.

H₂O₂ (Hydrogen Peroxide)

A disinfectant used to clean equipment, treat algae, and oxygenate water.

Grower Slang: “Peroxide,” “H2O2.”

Use diluted (1–2ml/L) — strong doses can harm roots or microbes.

Hydroton (Clay Pebbles)

Expanded clay pellets used as a hydroponic or aeration medium.

Grower Slang: “Clay balls.”

Reusable, pH-neutral, and excellent for DWC or flood-and-drain setups.

Hybrid Vigor

The increased growth rate and resilience of hybrid offspring.

Grower Slang: “Vigorous pheno.”

Common in F1 hybrid strains.

Hypoxia

Low oxygen levels in root zones, leading to root rot and stunted growth.

Grower Slang: “O2 drop,” “choked roots.”

Prevent with good drainage and airflow.

HPS (High Pressure Sodium)

A type of HID bulb known for red-orange light spectrum, ideal for flowering.

Grower Slang: “HPS rig,” “sodium light.”

Cronk Tip: Replace bulbs every 9–12 months for consistent output.

From hydro systems to harvest handling, “H” covers growth’s most critical stage transitions. Keep your humidity dialed in and your nutrients balanced for optimal Cronk-powered results.