What is Green Planet Horti Cal and what does 14-0-0 mean?
Green Planet Horti Cal is a fully water‑soluble dry supplement that provides nitrogen, calcium, and magnesium. The 14‑0‑0 NPK means it delivers nitrogen for growth and structure, with no phosphorus or potassium. Its guaranteed analysis is 14% N, 10% Ca, and 2% Mg, making it a high‑nitrogen Cal‑Mag–style product rather than a bloom PK additive.
Is Green Planet Horti Cal the same as a standard Cal‑Mag?
Not exactly. Green Planet Horti Cal supplies calcium and magnesium, but it also delivers a significant nitrogen boost. That makes it great when plants need Ca/Mg support plus growth power, but less suitable if you want calcium and magnesium with minimal nitrogen late in flower.
When should I use Green Planet Horti Cal during the grow cycle?
You can use it from early vegetative growth through most of flowering whenever calcium or magnesium support is needed. It is not used during the final flush. In late flower, apply cautiously because the nitrogen content can delay fade or affect finish quality if overused.
What plant problems does Green Planet Horti Cal help with?
It helps prevent or reduce calcium and magnesium‑related issues such as blossom‑end rot, tip burn linked to calcium deficiency, interveinal chlorosis from magnesium shortage, weak stems, and uneven growth. It works best alongside good watering habits, proper root oxygen, and stable pH.
Can I use Green Planet Horti Cal in hydro, coco, and soil?
Yes. Green Planet Horti Cal is designed for hydroponics, coco coir, and soil. Coco often benefits from extra Ca/Mg support, while soil usually needs lighter dosing because it holds nutrients longer. It is suitable for reservoirs, injectors, and drip systems when fully dissolved.
What crops is Green Planet Horti Cal suitable for?
It works well for leafy greens, fruiting crops like tomatoes and cucumbers, ornamentals, and indoor plants. Any fast‑growing plant with high calcium or nitrogen demand can benefit, as long as dosing is adjusted to plant size, growth stage, and environment.
Does Green Planet Horti Cal replace my base nutrient?
No. Green Planet Horti Cal is a supplement, not a complete fertiliser. You still need a proper base nutrient to supply phosphorus, potassium, and trace elements. Horti Cal is used to support calcium, magnesium, and nitrogen where your base feed or water source is lacking.
Do I still need Cal‑Mag if I use Green Planet Horti Cal?
Sometimes. Green Planet Horti Cal includes calcium and magnesium, but it also adds nitrogen. In RO or very soft water, it can often replace a liquid Cal‑Mag. In other setups, especially late flower, a low‑nitrogen Cal‑Mag may still be more appropriate.
What is the correct mixing rate for Green Planet Horti Cal?
The quick‑start rate is 0.7 g per litre, which equals 7 g per 10 L or 70 g per 100 L. Always weigh it with scales. Add it to clean water first, stir until fully dissolved, then add other nutrients to avoid precipitation or uneven mixing.
Can I premix Green Planet Horti Cal or leave it in a reservoir?
You can premix it, but avoid very strong concentrates that may crystallise. Use mixed solutions within a few days, keep them covered, and circulate if possible. Room‑temperature water helps solubility and reduces the risk of undissolved granules or line issues.
Do I need to monitor EC and pH when using Green Planet Horti Cal?
Yes. Green Planet Horti Cal can raise EC quickly because of its nitrogen content. Always check EC/PPM and adjust pH after mixing. In coco, watch runoff EC closely and flush lightly if salts begin to build.
Can Green Planet Horti Cal cause nutrient burn or lockout?
Yes, if overused. Signs include leaf tip burn, very dark leaves, slowed water uptake, or rising runoff EC. Underfeeding may show as weak growth or calcium‑related disorders. Balance, proper pH, and gradual increases prevent most issues.
Is Green Planet Horti Cal compatible with PK boosters and microbes?
It can be used alongside PK boosters, but total EC and nitrogen levels must be managed carefully. It is mineral‑based, so it is not food for microbes, and very high EC can stress biological products. Keep programs moderate and well balanced.
How should I store Green Planet Horti Cal?
Store it sealed in a cool, dry place. Humidity causes clumping and can affect solubility. If it clumps, break it up before use. When kept dry, it has a long shelf life and does not expire quickly.
Why choose Green Planet Horti Cal over a liquid Cal‑Mag?
Dry fertilisers are cost‑effective, consistent, and easy to store. Green Planet Horti Cal delivers calcium, magnesium, and a meaningful nitrogen boost in a clean, irrigation‑friendly form, making it especially useful when plants need both structure and growth support.
