How to fertilize Crossandra

Plant

Crossandra

Crossandra infundibuliformis (L.) Nees

Type: indoor
Difficulty: Easy
Pet safety: Pet safe

Quick care

Light: Bright filtered light or partial shade; gentle morning sun can support flowering
Water: Keep the root zone moderately and evenly moist while Crossandra is actively growing, but let the surface begin to dry before watering again. Water the mix thoroughly and let excess drain away. The plant dislikes both prolonged drought and waterlogged soil, so do not leave its pot standing in a saucer.
Soil: Use a fertile, organic-rich but free-draining potting mix. Crossandra prefers slightly acidic conditions and steady moisture, while good drainage protects its roots from waterlogging. A peat-free container compost with added perlite or another open-textured material is a practical choice indoors.

Care guides

Frequently asked questions

How do I care for Crossandra?

See the full Crossandra care cluster for species-specific fertilizer guidance.

How this Crossandra fertilizer guide is reviewed?

Editorial policy Review board

Written by · Reviewed by LeafyPixels Review Board

This Crossandra fertilizer guide was researched and written by . Fertilizer guidance, practical checks, and care recommendations for Crossandra are checked against multiple independent references before publication.

We prioritize sources that hold up under scrutiny:

University cooperative extension bulletins and fact sheets (Penn State, Clemson, UMD, NC State, and similar programs)
Botanical garden and horticultural society publications
Peer-reviewed plant science and veterinary toxicology references where pet safety matters (including ASPCA Animal Poison Control)
Established reference works on indoor plant culture

The LeafyPixels editorial team then reviews the draft for clarity, step-by-step usefulness, and fit with real apartment and home conditions-not ideal greenhouse setups. When guidance changes materially, we update the page and note the revision date.

Sources used

Better Homes & Gardens — How to Plant and Grow Crossandra (n.d.) Seasonal and container growing, partial shade in hot weather, humidity, soil pH, watering, temperature, feeding, pinching, and repotting guidance. [Online]. Available at: https://www.bhg.com/gardening/plant-dictionary/annual/crossandra/ (Accessed: 1 March 2024).
Epic Gardening — How to Plant, Grow, and Care for Crossandra (n.d.) Practical propagation, pinching and flower-spike care, seed-pod behavior, and common pest observations. [Online]. Available at: https://www.epicgardening.com/crossandra/ (Accessed: 1 March 2024).
National Parks Board Singapore Flora and Fauna Web — Crossandra infundibuliformis (n.d.) Species identity, growth form, dimensions, range, flowering and seed-pod description, cultivation, drainage, pruning, and propagation. [Online]. Available at: https://www.nparks.gov.sg/florafaunaweb/flora/1/8/1884 (Accessed: 1 March 2024).
NC State Extension Gardener Plant Toolbox — Crossandra infundibuliformis (n.d.) Scientific identity, family, origin, size, light, soil, pollinator value, cultivars, hardiness, pet-safety tags, and pests. [Online]. Available at: https://plants.ces.ncsu.edu/plants/crossandra-infundibuliformis/ (Accessed: 1 March 2024).
Royal Horticultural Society — Crossandra infundibuliformis (n.d.) Evergreen habit, size, warm frost-free outdoor conditions, filtered summer light under glass, pinching, and propagation by seed or cuttings. [Online]. Available at: https://www.rhs.org.uk/plants/42165/crossandra-infundibuliformis/details (Accessed: 1 March 2024).
The Spruce — How to Grow and Care for Crossandra (n.d.) Indoor light, soil, watering, humidity, cold sensitivity, container care, and species identification. [Online]. Available at: https://www.thespruce.com/grow-crossandra-inside-1902641 (Accessed: 1 March 2024).