Grammatophyllum Martae prefers consistent moisture but dislikes waterlogged roots. Water thoroughly when the potting medium is nearly dry. Reduce watering slightly during cooler, dormant periods to prevent root rot.

Ensure good air circulation to aid drying.

Remove spent flower spikes at the base once blooming has finished to encourage the plant to redirect energy into new growth. Dead or damaged leaves and pseudobulbs should also be trimmed off with sterile tools to maintain plant health.

Grammatophyllum Martae is typically propagated by division. When the plant becomes overgrown, carefully divide mature pseudobulbs, ensuring each division has at least three healthy pseudobulbs and some roots.

Repot the divisions as usual.

Repot every 2-3 years or when the potting medium begins to break down. Use a coarse, well-draining orchid mix. Choose a pot that is only slightly larger than the current root ball to avoid overwatering issues.

Repot after flowering.