Source: Wikimedia Commons
Nepenthes merrilliana
AdvancedNepenthes merrilliana
A lowland pitcher plant from the southern Philippines. Its upper pitchers reach 40 cm long, among the largest in the genus and rivalling N. rajah, with a broad, strongly ribbed peristome and a large lid.
About
Nepenthes merrilliana is a pitcher plant species native to northern and central Mindanao and the neighbouring islands of Dinagat and Samar in the Philippines. Named after the American botanist Elmer Drew Merrill, it was described by J. M. Macfarlane in 1911. It grows on steep slopes in coastal forest, mainly at 0-1,100 m. It is known for producing some of the largest pitchers in the genus, rivalling those of N. rajah. Lower pitchers are broadly ovate, about 35 cm tall and 14 cm wide, and upper pitchers reach about 40 cm long and 10 cm wide. The two pitcher types differ little in shape; the peristome is flattened, 8-15 mm wide and clearly ribbed. The leaves are large, 20-60 cm long. The closely related N. surigaoensis was long treated as a synonym. The hybrid with N. alata is called N. × merrilliata, and in Japan plants under that hybrid name are also sold, so check the scientific name to avoid confusing it with the species. It is listed as Vulnerable by the IUCN. In Japan, plants with locality data such as Dinagat Island are available from specialist nurseries and online auctions. It needs space as it matures and prefers constant heat and humidity, so it suits growers with a greenhouse.
Source: Wikipedia (CC BY-SA 4.0)
Size of the Nepenthes merrilliana
The Nepenthes merrilliana grows to Lower pitchers to about 35 cm tall, upper pitchers to about 40 cm long; leaves 20-60 cm.
Basic Info
Origin
Philippines (northern and central Mindanao, Dinagat, Samar)
Lifespan
Perennial (climbing)
Size
Lower pitchers to about 35 cm tall, upper pitchers to about 40 cm long; leaves 20-60 cm
Temperature
10〜30℃
Humidity
60〜90%
Watering & Fertilizer
Very dilute fertilizer at most (catches insects)
Growing Tips
Temperature & Overwintering
A lowland species that wants warmth and humidity all year. It is cold-sensitive, so keep it in a warm room or heated greenhouse from autumn to spring.
Light & Placement
Likes bright light. Grow it in a bright window or greenhouse spot, avoiding only harsh midsummer sun.
Watering
Use rain water or water low in dissolved minerals and water before the mix dries out. Do not leave the pot standing in water.
Soil & Repotting
Plant in a free-draining, airy mix; pure sphagnum or orchid mix with sphagnum or perlite are common choices.
Fertilizer
If using chemical fertilizer, use it at very low strength; an occasional insect dropped into a pitcher is enough.
Pests & Cautions
The hybrid N. × merrilliata is sold under a similar name; if you want the species, check the scientific name and locality.
Nepenthes merrilliana FAQ
QWhat is the growing difficulty level for Nepenthes merrilliana?
Advanced. A variety suitable for advanced growers. Requires advanced cultivation techniques and specialized equipment, with careful environmental adjustments needed.
QHow large does Nepenthes merrilliana get?
The mature size of Nepenthes merrilliana is Lower pitchers to about 35 cm tall, upper pitchers to about 40 cm long; leaves 20-60 cm. This may vary slightly depending on cultivation environment and individual differences.
QHow should I water and fertilize Nepenthes merrilliana?
Nepenthes merrilliana: watering & fertilizer — Very dilute fertilizer at most (catches insects). Aim for appropriate frequency and amount.
QWhat is the typical price for Nepenthes merrilliana?
The price of Nepenthes merrilliana varies significantly by variety, characteristics, size, and lineage. Please check GrowerDirect's price guide for the latest market information.
Last updated: September 23, 2026
References & Sources
Edited & verified by: GrowerDirect Editorial Team
The classifications, regulations, and growing data on this page are created and verified based on the primary information database below.
Taxonomy & Authority
Accepted name: Nepenthes merrilliana Macfarl.
Authority databases: GBIF · GBIF Nepenthes merrilliana Macfarl.
Nomenclature follows global taxonomic authority databases.
Regulations & Conservation Status
The whole genus Nepenthes is listed in CITES Appendix II (apart from a few Appendix I species). Import and export across borders require CITES permits, but no registration is needed to buy, sell or give plants within Japan.
Sources: Species+ (CITES) Nepenthes merrilliana
Regulations may change. Always verify the latest information with the relevant authorities.
Related Species
Find listings for this species
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