Plagron Terra Bloom is a mineral base plant nutrient for the flowering phase, a liquid fertilizer that supports and promotes flowering, with a guaranteed analysis of 2-2-4 (N-P-K), supplied here in a 20 L can. The maker states it is suitable for all soil mixes and can be used together with all liquid fertilizers and additives. This page gives Plagron’s published guaranteed analysis, dosing directions, and product characteristics, and is honest about the composition details the maker does not publish. It is a liquid base nutrient for the bloom stage, not a grow-stage feed and not a dry amendment.
What it is
Terra Bloom is the flowering-phase base nutrient in Plagron’s mineral TERRA line. The maker describes it as a highly concentrated mineral base plant nutrient for use during the plant’s flowering phase, a liquid fertilizer intended to provide the plant’s core nutrition once it moves out of the vegetative stage. Its guaranteed analysis is an NPK of 2-2-4, weighting potassium over nitrogen — the direction a grower usually wants heading into bloom. Because it is a base nutrient rather than an additive, it is designed to be the main feed of the reservoir, with boosters layered on top as the grow calls for them.
This listing is the 20 L can, the largest of the sizes Plagron lists for Terra Bloom (the maker also offers it as a 1 L bottle and in 5 L, 10 L and 20 L cans), so it suits a grower feeding a larger or ongoing crop who does not want to re-buy small bottles.
Guaranteed analysis and specifications
| Guaranteed analysis (N-P-K) | 2-2-4 |
|---|---|
| Type | Mineral liquid base nutrient (flowering phase) |
| Container size | 20 L can |
| Recommended pH range | Maker recommends a nutrient-solution pH between 5.5 and 6.5 |
| Compatibility | Suitable for all soil mixes; can be combined with all liquid fertilizers and additives |
The 2-2-4 header is the only guaranteed-analysis figure Plagron publishes on this product page; the individual element percentages, secondary nutrients, and the solution’s EC and density are not stated on the source read, so they are held below rather than guessed.
Why choose it
- Bloom-weighted analysis. The 2-2-4 ratio puts potassium ahead of nitrogen, matching the shift most growers make when a plant leaves veg and starts setting flower.
- A complete base, not just an additive. Plagron positions it as a highly concentrated mineral base plant nutrient, so it carries the bloom-stage feed on its own rather than needing a separate base underneath it.
- Plays well with a wider program. The maker states it is suitable for all soil mixes and can be used with all liquid fertilizers and additives, which makes it easy to slot into an existing feeding routine.
- Bulk size. The 20 L can is the economy pack for a grower feeding a larger or continuous crop.
Best uses
- Flowering-stage feeding in soil. The maker’s directions are for use from the start of the flowering phase (later if a pre-fertilised substrate is used), making it the reservoir’s core feed through bloom.
- Soil and soil-mix gardens. Plagron states it is suitable for all soil mixes, the TERRA line’s intended medium.
- Growers who already run boosters. Because it combines with all liquid fertilizers and additives, it works as the base under a bloom booster or PK supplement.
Compatibility (media and mixing)
Plagron lists Terra Bloom as suitable for all soil mixes and compatible with all liquid fertilizers and additives. The maker also notes that with the TERRA line you should still regulate the pH and EC of the nutrient solution, and recommends a pH between 5.5 and 6.5, pointing growers to its TERRA schedule for the EC target rather than publishing a single figure. As with any concentrated base nutrient, add it to water and mix — never dose the concentrate directly onto roots.
Dosing and application (maker directions)
Follow the maker’s label. Plagron’s published direction for Terra Bloom is:
- Shake and dilute. Shake well before use, then add a maximum of 20 ml Terra Bloom per gallon of water (a 1:200 dilution).
- Every watering in bloom. Use this solution each time the plants are irrigated during the flowering phase.
- Mixed-solution storage. The maker notes the diluted solution can be kept for at least a week after mixing, though the pH will slowly rise and should be monitored.
How it compares
| Trait | Plagron Terra Bloom | A grow-stage base nutrient |
|---|---|---|
| Stage | Flowering phase | Vegetative / grow phase |
| N-P-K emphasis | 2-2-4 (potassium-forward) | Nitrogen-forward for leaf and stem growth |
| Form | Mineral liquid concentrate | Varies (liquid or dry) |
The comparison contrasts stage roles; specific values for other products are not asserted here unless a sourced page states them.
Frequently asked questions
What is the NPK? Plagron’s guaranteed analysis for Terra Bloom is 2-2-4.
How much do I use? A maximum of 20 ml per gallon of water (1:200), each time you irrigate during flowering.
What pH should the solution be? The maker recommends a pH between 5.5 and 6.5.
What size is this? This listing is the 20 L can.
Who this is for — and who should skip it
Suited: soil growers who want a mineral, bloom-stage base nutrient with a 2-2-4 analysis, fed by the maker’s dilution rate and combined with their own boosters or a wider additive program. The 20 L can fits a larger or ongoing crop.
Not for / its limits: it is a flowering feed — it is not a grow-stage base and not a stand-alone complete program for the whole cycle. It is a mineral nutrient (despite the catalog’s organic filing, the maker calls it mineral), so it is not an OMRI-type organic input. And it is a soil-line product; the maker does not present it as a purpose-built recirculating-hydroponic reservoir feed.
HELD (not stated because not sourced this session): the individual guaranteed-analysis percentages behind the 2-2-4 header (N, P2O5, K2O, and any secondary or micronutrients); the solution EC / density and a fixed EC target (the maker points to its TERRA schedule); the maker SKU / part number; the warranty term (held per M-05); the sealed-product shelf life; and the live retail price (the storefront price field is the source of truth at deploy).
Feeding a bloom-stage crop? Add to cart, or talk to a grower about matching a base nutrient to your medium and stage.
Related base nutrients
For other base feeds, browse the base nutrients category. Related products growers pair or compare with Terra Bloom include:
- Advanced Nutrients pH Perfect Sensi Bloom Part A — a two-part bloom base from another maker.
- Earth Juice Grow — a grow-stage base for the vegetative phase.
- Cyco Grow B — the grow-side part of a two-part mineral program.
- Emerald Harvest Cali Pro Bloom B — a bloom base part in a professional two-part line.
- Flora Series Quart Trial Pack — a three-part base-nutrient starter set.
Sources
- Plagron (Plagron USA) — Terra Bloom base-nutrient product page (HTTP 200, retrieved 2026-07-09 via the WAF-immune fetch_maker path; PRIMARY source): NPK-fertilizer (2-2-4); highly concentrated mineral base plant nutrient for the flowering phase; suitable for all soil mixes and combinable with all liquid fertilizers and additives; dosage a maximum of 20 ml per gallon of water (1:200) each irrigation in flowering; recommended solution pH 5.5–6.5; packaging 1 L bottle and 5 L, 10 L and 20 L cans; mixed solution keeps at least a week: https://plagron.us/products/terra-bloom/
Reviews
There are no reviews yet.