I
Welcome to the Grower Glossary – I. Learn about irrigation, intensity, internodal spacing, inoculants, and integrated pest management. These “I” terms help you fine-tune precision growing for healthier, stronger plants.
Ice Hash
A solventless cannabis concentrate made by agitating frozen plant material in ice water to separate trichomes.
Grower Slang: “Bubble hash,” “ice wash.”
Produces clean, terpene-rich resin heads ideal for pressing into hash rosin.
Ideal pH
The optimal pH range where plants absorb nutrients efficiently.
Grower Slang: “Sweet spot.”
Cronk Tip:
Soil: 6.2–6.8
Coco/Hydro: 5.8–6.2
Check runoff regularly to avoid nutrient lockout.
ILS (Integrated Lighting System)
A setup combining different light sources — e.g., LEDs for bloom and fluorescents for propagation.
Grower Slang: “Mixed rig.”
Improves canopy penetration and spectral balance.
Immobile Nutrients
Elements that can’t move easily within the plant (like calcium or iron). Deficiencies show in new growth first.
Grower Slang: “Top-leaf issue.”
Cronk Tip: Supplement early with CalMag 2-0-0 or PuurCalMag.
Immunity (Plant Immunity)
A plant’s ability to resist disease and stress through biological or structural defenses.
Grower Slang: “Plant resilience.”
Strengthened by silica (Armadillo Armour) and beneficial microbes (Monkey Juice).
Impermeable Layer
A compacted or dense soil layer that prevents water movement and root growth.
Grower Slang: “Hardpan.”
Break up with aeration or add perlite for better drainage.
In the Zone
Grower slang describing when a plant is thriving under ideal conditions — balanced nutrients, light, and environment.
Grower Slang: “Dialed in.”
Incandescent Light
An outdated light source with poor efficiency and limited spectrum.
Grower Slang: “Old bulbs.”
Avoid for modern cultivation — LEDs outperform in every metric.
Indoor Growing
Cultivation inside a controlled environment using artificial light and climate control.
Grower Slang: “Indoor,” “tent grow.”
Cronk Tip: Maintain consistent temps (24–28°C) and RH (45–60%) for predictable results.
Inert Medium
A non-nutritive substrate such as rockwool, perlite, or clay pellets.
Grower Slang: “Blank medium.”
Used in hydro systems — nutrients are provided entirely through feeding.
Inoculant
A product containing beneficial microbes or fungi that colonize the root zone.
Grower Slang: “Microbe starter,” “root charge.”
Cronk Tip: Apply Monkey Juice as an inoculant for stronger roots and nutrient uptake.
Insectary
A dedicated space or setup for breeding beneficial insects like ladybugs or predatory mites.
Grower Slang: “Bug lab.”
Part of advanced organic pest management systems.
Insecticidal Soap
A natural pest control made from fatty acids that break down soft-bodied insects like aphids.
Grower Slang: “Soap spray.”
Safe for organic and veg stages — rinse residue before bloom.
Integrated Pest Management (IPM)
A holistic approach combining biological, environmental, and minimal chemical pest control.
Grower Slang: “IPM routine.”
Cronk Tip: Use Monkey Juice, Sticky Bandit, and beneficial insects together for natural balance.
Intensity (Light Intensity)
The strength of light reaching the canopy, measured in PPFD or lux.
Grower Slang: “Light power,” “PAR level.”
Cronk Tip:
Seedlings: 300–400 PPFD
Veg: 500–700
Bloom: 900–1200
Intercropping
Growing two or more plant species together to maximize space or create beneficial interactions.
Grower Slang: “Companion grow.”
Can improve soil health and pest resistance.
Intermodal Spacing
The distance between nodes (branch points) on a stem.
Grower Slang: “Node gap.”
Short spacing = compact growth; long spacing = stretch. Controlled by genetics, light, and temperature.
Ionic Nutrients
Minerals dissolved in water as charged ions that plants can absorb.
Grower Slang: “Available ions.”
Cronk nutrients are fully ionic — ensuring quick uptake and balanced chemistry.
Ion Exchange
The process of nutrient ions swapping between soil particles and root membranes.
Grower Slang: “Nutrient swap.”
Occurs constantly in living soil and coco.
Iron (Fe)
A micronutrient vital for chlorophyll production and respiration.
Grower Slang: “Fe.”
Deficiency shows as yellowing between veins on new leaves.
Cronk Tip: Micro in the Classic Line provides chelated iron for steady uptake.
Irrigation
The application of water or nutrient solution to plants.
Grower Slang: “Feed cycle.”
Types include drip, flood-and-drain, hand watering, and automatic fertigation.
Irrigation Controller
An electronic system that automates watering schedules.
Grower Slang: “Feed timer.”
Ensures consistency and prevents overwatering in large setups.
Isoprene
A compound emitted by plants that helps regulate temperature and stress response.
Grower Slang: “Plant vapor.”
Found naturally in healthy leaves under light stress.
Isotope (Grow Chemistry Term)
A variant of a chemical element used in research to trace nutrient uptake.
Grower Slang: “Tracer element.”
Useful in advanced plant physiology studies.
Isolation Tent
A separate enclosure for quarantining new or sick plants to prevent pest or disease spread.
Grower Slang: “Quarantine tent,” “sick bay.”
Good practice in both hobby and commercial grows.
IAA (Indole-3-Acetic Acid)
A natural auxin (plant hormone) that promotes root and shoot elongation.
Grower Slang: “Rooting hormone.”
Present in most cloning gels and growth boosters.
Ice Bath (Drying or Extraction Term)
Used in hash making and some post-harvest processes to stabilize resin or slow terpene loss.
Grower Slang: “Cold wash.”
Keeps trichomes brittle for easier separation.
Infusion
The process of steeping cannabis material in oils or solvents to extract cannabinoids and terpenes.
Grower Slang: “Infused oil,” “canna-oil.”
Indica
A subspecies of cannabis known for short stature, broad leaves, and relaxing effects.
Grower Slang: “Indy,” “body strain.”
Typically shorter flowering time (7–9 weeks) and dense buds.
Inert Gas (Curing/Storage Term)
Gases like nitrogen or argon used to displace oxygen in storage containers, preserving freshness.
Grower Slang: “Nitro seal.”
Used in commercial packaging.
Insect Frass
The excrement of beneficial insects, rich in chitin and nutrients.
Grower Slang: “Bug poop.”
Cronk Tip: Add to soil as a natural amendment — boosts immune response and microbe activity.
Inorganic Fertilizer
Synthetic nutrient sources made from mineral salts.
Grower Slang: “Mineral feed.”
Cronk Classic Line uses precise inorganic mineral blends for consistent, clean results.
Insertion Point (Node)
The area where leaves, branches, or buds attach to the stem.
Grower Slang: “Node site.”
Key target for pruning and topping techniques.
Inverter (Grow Equipment)
A device that converts DC power (from batteries or solar) to AC for grow lights and fans.
Grower Slang: “Power converter.”
Useful in off-grid or remote grows.
Involucral Bracts
Modified leaves surrounding cannabis flowers — protect resin glands and pistils.
Grower Slang: “Calyx wrappers.”
IPM Schedule
A proactive pest management routine applied on rotation (weekly sprays, inspections, or predator release).
Grower Slang: “IPM plan.”
Cronk Tip: Prevention is easier than cure — consistency keeps crops clean.
Iso (Isopropyl Alcohol)
A cleaning solvent used to sterilize tools and surfaces.
Grower Slang: “Iso wipe.”
Essential for maintaining sterile environments and trimming gear.
Incomplete Combustion (Post-Harvest)
When cannabis burns unevenly due to residual moisture or nutrients.
Grower Slang: “Black ash.”
Proper flushing and curing fix this issue.
Ice Hash
A solventless cannabis concentrate made by agitating frozen plant material in ice water to separate trichomes.
Grower Slang: “Bubble hash,” “ice wash.”
Produces clean, terpene-rich resin heads ideal for pressing into hash rosin.
Ideal pH
The optimal pH range where plants absorb nutrients efficiently.
Grower Slang: “Sweet spot.”
Cronk Tip:
Soil: 6.2–6.8
Coco/Hydro: 5.8–6.2
Check runoff regularly to avoid nutrient lockout.
ILS (Integrated Lighting System)
A setup combining different light sources — e.g., LEDs for bloom and fluorescents for propagation.
Grower Slang: “Mixed rig.”
Improves canopy penetration and spectral balance.
Immobile Nutrients
Elements that can’t move easily within the plant (like calcium or iron). Deficiencies show in new growth first.
Grower Slang: “Top-leaf issue.”
Cronk Tip: Supplement early with CalMag 2-0-0 or PuurCalMag.
Immunity (Plant Immunity)
A plant’s ability to resist disease and stress through biological or structural defenses.
Grower Slang: “Plant resilience.”
Strengthened by silica (Armadillo Armour) and beneficial microbes (Monkey Juice).
Impermeable Layer
A compacted or dense soil layer that prevents water movement and root growth.
Grower Slang: “Hardpan.”
Break up with aeration or add perlite for better drainage.
In the Zone
Grower slang describing when a plant is thriving under ideal conditions — balanced nutrients, light, and environment.
Grower Slang: “Dialed in.”
Incandescent Light
An outdated light source with poor efficiency and limited spectrum.
Grower Slang: “Old bulbs.”
Avoid for modern cultivation — LEDs outperform in every metric.
Indoor Growing
Cultivation inside a controlled environment using artificial light and climate control.
Grower Slang: “Indoor,” “tent grow.”
Cronk Tip: Maintain consistent temps (24–28°C) and RH (45–60%) for predictable results.
Inert Medium
A non-nutritive substrate such as rockwool, perlite, or clay pellets.
Grower Slang: “Blank medium.”
Used in hydro systems — nutrients are provided entirely through feeding.
Inoculant
A product containing beneficial microbes or fungi that colonize the root zone.
Grower Slang: “Microbe starter,” “root charge.”
Cronk Tip: Apply Monkey Juice as an inoculant for stronger roots and nutrient uptake.
Insectary
A dedicated space or setup for breeding beneficial insects like ladybugs or predatory mites.
Grower Slang: “Bug lab.”
Part of advanced organic pest management systems.
Insecticidal Soap
A natural pest control made from fatty acids that break down soft-bodied insects like aphids.
Grower Slang: “Soap spray.”
Safe for organic and veg stages — rinse residue before bloom.
Integrated Pest Management (IPM)
A holistic approach combining biological, environmental, and minimal chemical pest control.
Grower Slang: “IPM routine.”
Cronk Tip: Use Monkey Juice, Sticky Bandit, and beneficial insects together for natural balance.
Intensity (Light Intensity)
The strength of light reaching the canopy, measured in PPFD or lux.
Grower Slang: “Light power,” “PAR level.”
Cronk Tip:
Seedlings: 300–400 PPFD
Veg: 500–700
Bloom: 900–1200
Intercropping
Growing two or more plant species together to maximize space or create beneficial interactions.
Grower Slang: “Companion grow.”
Can improve soil health and pest resistance.
Intermodal Spacing
The distance between nodes (branch points) on a stem.
Grower Slang: “Node gap.”
Short spacing = compact growth; long spacing = stretch. Controlled by genetics, light, and temperature.
Ionic Nutrients
Minerals dissolved in water as charged ions that plants can absorb.
Grower Slang: “Available ions.”
Cronk nutrients are fully ionic — ensuring quick uptake and balanced chemistry.
Ion Exchange
The process of nutrient ions swapping between soil particles and root membranes.
Grower Slang: “Nutrient swap.”
Occurs constantly in living soil and coco.
Iron (Fe)
A micronutrient vital for chlorophyll production and respiration.
Grower Slang: “Fe.”
Deficiency shows as yellowing between veins on new leaves.
Cronk Tip: Micro in the Classic Line provides chelated iron for steady uptake.
Irrigation
The application of water or nutrient solution to plants.
Grower Slang: “Feed cycle.”
Types include drip, flood-and-drain, hand watering, and automatic fertigation.
Irrigation Controller
An electronic system that automates watering schedules.
Grower Slang: “Feed timer.”
Ensures consistency and prevents overwatering in large setups.
Isoprene
A compound emitted by plants that helps regulate temperature and stress response.
Grower Slang: “Plant vapor.”
Found naturally in healthy leaves under light stress.
Isotope (Grow Chemistry Term)
A variant of a chemical element used in research to trace nutrient uptake.
Grower Slang: “Tracer element.”
Useful in advanced plant physiology studies.
Isolation Tent
A separate enclosure for quarantining new or sick plants to prevent pest or disease spread.
Grower Slang: “Quarantine tent,” “sick bay.”
Good practice in both hobby and commercial grows.
IAA (Indole-3-Acetic Acid)
A natural auxin (plant hormone) that promotes root and shoot elongation.
Grower Slang: “Rooting hormone.”
Present in most cloning gels and growth boosters.
Ice Bath (Drying or Extraction Term)
Used in hash making and some post-harvest processes to stabilize resin or slow terpene loss.
Grower Slang: “Cold wash.”
Keeps trichomes brittle for easier separation.
Infusion
The process of steeping cannabis material in oils or solvents to extract cannabinoids and terpenes.
Grower Slang: “Infused oil,” “canna-oil.”
Indica
A subspecies of cannabis known for short stature, broad leaves, and relaxing effects.
Grower Slang: “Indy,” “body strain.”
Typically shorter flowering time (7–9 weeks) and dense buds.
Inert Gas (Curing/Storage Term)
Gases like nitrogen or argon used to displace oxygen in storage containers, preserving freshness.
Grower Slang: “Nitro seal.”
Used in commercial packaging.
Insect Frass
The excrement of beneficial insects, rich in chitin and nutrients.
Grower Slang: “Bug poop.”
Cronk Tip: Add to soil as a natural amendment — boosts immune response and microbe activity.
Inorganic Fertilizer
Synthetic nutrient sources made from mineral salts.
Grower Slang: “Mineral feed.”
Cronk Classic Line uses precise inorganic mineral blends for consistent, clean results.
Insertion Point (Node)
The area where leaves, branches, or buds attach to the stem.
Grower Slang: “Node site.”
Key target for pruning and topping techniques.
Inverter (Grow Equipment)
A device that converts DC power (from batteries or solar) to AC for grow lights and fans.
Grower Slang: “Power converter.”
Useful in off-grid or remote grows.
Involucral Bracts
Modified leaves surrounding cannabis flowers — protect resin glands and pistils.
Grower Slang: “Calyx wrappers.”
IPM Schedule
A proactive pest management routine applied on rotation (weekly sprays, inspections, or predator release).
Grower Slang: “IPM plan.”
Cronk Tip: Prevention is easier than cure — consistency keeps crops clean.
Iso (Isopropyl Alcohol)
A cleaning solvent used to sterilize tools and surfaces.
Grower Slang: “Iso wipe.”
Essential for maintaining sterile environments and trimming gear.
Incomplete Combustion (Post-Harvest)
When cannabis burns unevenly due to residual moisture or nutrients.
Grower Slang: “Black ash.”
Proper flushing and curing fix this issue.
“I” means intention — the difference between good and great growing. Cronk Nutrients provides the right inoculants, irrigation balance, and insight to make your next grow your best one yet.