How to Fertilize pinecone-like raceme dendrobium?
Half-strength orchid feed every two to three weeks in active growth

pinecone-like raceme dendrobium · Dendrobium thyrsiflorum
Grow in an epiphytic, medium grade, bark-based potting mix with added perlite, moss, or coir. As with many orchids, they grow best when the roots are slightly restricted. Therefore, avoid over-potting or frequent root disturbance. Provide bright light conditions throughout the year. The average temperatures are 25-30°C during day and 16-20°C at night time. Plant requires frequent watering and relatively high humidity during spring and summer months and a slightly drier and cooler conditions in winter - reduce watering and feeding in October, but do not leave plant dry for long period of time. See indoor orchid cultivation
Half-strength orchid feed every two to three weeks in active growth