Plagron Terra Bloom — Mineral Base Nutrient for Flowering Phase Soil Growing
Best for: Soil growers who want a reliable, straightforward bloom nutrient that doesn't overcomplicate things
Our thoughts
Terra Bloom is one of those nutrients that just works. It's been around for years because growers trust it — proper mineral nutrition at a price that doesn't sting. The 2023 update with chelated micronutrients makes it easier to dial in, especially if pH monitoring isn't your strongest suit. Solid choice for anyone running soil and wanting consistency without faffing about.
Plagron Terra Bloom is a one-part liquid base nutrient designed specifically for the flowering phase in soil and peat-based growing. It delivers the mineral nutrition your plants need during peak flower development — phosphorus and potassium-heavy (2-2-4 NPK ratio) with balanced micronutrients. Applied from the start of flowering through to harvest, it gives you full control over what your plants receive without the complexity of multi-part systems.
How it compares
Terra Bloom sits in the reliable mid-market tier of soil flowering nutrients.
- Significantly cheaper than premium brands like Advanced Nutrients without sacrificing consistency
- Simpler than two or three-part systems — just one bottle, one ratio
- Self-buffering pH (maintains 6.0–6.5) means less tweaking than uncontrolled alternatives
- Chelated micronutrients (2023 update) make it less fussy about water pH than older formulas
If you're comparing to General Hydroponics or Fox Farm, you're looking at similar price point but Plagron's track record is stronger in soil specifically.
Usage guidance
Terra Bloom works across most watering setups in soil growing:
Starting timing
Use from the first day of flowering. If you're using a pre-fertilised soil, you might delay a week or two — feed to what you see, not a strict calendar.
Dosage
5 ml per litre of water. Shake the bottle before measuring. That's a 1:200 dilution ratio. Simple.
Feeding schedule
Apply each time you water during flowering. Monitor EC as you go — aim for 1.2–1.4 mS/cm during early flower, ramp to 1.6–1.8 mS/cm at peak flowering. This prevents under and over-feeding.
Tank management
Mixed solution keeps for about a week. Don't mix organic additives into the tank — they'll degrade fast. Keep it clean.
Boosting results
Terra Bloom is the foundation. Add Green Sensation from week four onwards if you want to push yield. Sugar Royal works throughout flowering for plant health.
Technical specifications
- Type: Liquid mineral base nutrient (flowering phase)
- NPK Ratio: 2-2-4
- Nitrogen (total): 2.1% (1.5% NO₃, 0.6% NH₄)
- Phosphorus (P₂O₅): 1.6%
- Potassium (K₂O): 4.0%
- Magnesium: 0.48%
- Trace elements: Iron, manganese, molybdenum, zinc, copper, boron (all chelated)
- pH Range: 6.0–6.5 (self-buffering)
- Available sizes: 1L, 5L, 10L, 20L
- Shelf life: 4 years unopened; 6 months once opened
- Suitable for: Soil, peat, and all substrate types
Who this is for
- Soil growers wanting a no-nonsense, proven flowering nutrient
- Budget growers who won't compromise on reliability
- First-time bloomers who need something straightforward to dial in
- Growers running the full Plagron Terra system (Grow + Bloom)
- Anyone sick of multi-part complexity or constantly adjusting pH
Not for hydroponic-only growers — this is built for soil. If you're in soil, you're in the right place.
Our take
Terra Bloom does what it promises: proper mineral nutrition for flowering plants without the markup or the headache. The 2023 chelated micronutrient update is a genuine quality jump — your plants absorb what you feed them more reliably, pH swings matter less, and results are more consistent.
Good time to buy while clearance stock lasts. Works day in, day out, and a lot of growers choose it for that exact reason.
