Horti Late Cal by Green Planet — Zero-Nitrogen Calcium for Late Bloom
GP-NUT-HORTILATECAL-1.13KG
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Pairs well with
Horti Late Cal is Green Planet's zero-nitrogen calcium and micronutrient fertiliser, built specifically for the late flowering stage. Where standard Horti Cal carries 14% nitrogen for the full cycle, Late Cal delivers highly bioavailable calcium and essential micronutrients with no nitrogen at all — so plants keep strong cell structure and heavy bulking through the final weeks without the risk of excess leafy growth. It's a fully water-soluble dry formula from Green Planet's professional Horti Commercial Line, in a 1.13 kg pouch.
Specifications
- Run Horti Cal through veg and early flower, then swap to Late Cal when you want the calcium without the 14% nitrogen.
- Pair it with Horti Late Bloom in the final weeks — Ca and micros from one, the finishing PK surge from the other.
- Dissolve it fully in water before combining with other concentrates, and re-check EC and pH before you feed.
How to use
Pairs well with
The 0-24-26 finishing base feed Late Cal is designed to run alongside.
Horti CalThe 14-0-0 Ca+Mg workhorse for veg and early flower, before the Late Cal swap.
HORTI rawKStraight 0-0-62 potassium for the final bulking push.
FAQ
Is Horti Late Cal the same as Horti Cal?
No. Horti Cal is a 14-0-0 calcium and magnesium formula for the full growth cycle. Late Cal contains zero nitrogen and is built specifically for the late flowering stage, where extra nitrogen works against you.
Does it contain any nitrogen?
No. It's a zero-nitrogen formula — calcium and essential micronutrients only, so you can support cell structure and bulking without pushing leafy growth in the finishing phase.
Is it fully water soluble?
Yes. Like the rest of the Horti Commercial Line it's fully water-soluble with no fillers and zero sediment, so it won't block irrigation systems, injectors, or drippers.
Do I run it for the whole grow?
No. It's formulated for the late flowering stage. Run Horti Cal earlier in the cycle, then switch to Late Cal for the final weeks through to harvest.
Does it help prevent calcium deficiencies?
Yes. It delivers highly bioavailable calcium during heavy flowering, when demand peaks — helping maintain strong cell structure and plant health right through to harvest.
Calcium for the final stretch — without the nitrogen
Horti Late Cal keeps flowers dense and plants healthy through to harvest. Free shipping over $499*.