Plant Comparison

Philodendron Melanochrysum vs Pastazanum

Melanochrysum, often called the king of Philodendrons, has near-black velvet leaves that darken further with age and elongate dramatically as the plant matures. Pastazanum has broad, glossy, rippled leaves with a completely different texture โ€” smooth rather than velvet, and wavy at the margins. Both eventually produce enormous leaves; the difference is texture, colour, and how much humidity each demands to get there.

Side-by-Side Comparison

CategoryPhilodendron MelanochrysumPhilodendron Pastazanum
๐Ÿƒ Leaf textureDeep velvet, near-blackGlossy and smooth, not velvet
๐Ÿ“ Leaf shapeElongated heart, lengthens with maturityBroad, rippled, wavy margins
๐Ÿ“ Mature sizeโ˜…Leaves to 60โ€“90 cm on a mature climbing plantLeaves to 50โ€“70 cm, broader than long
๐Ÿ’ฆ Humidity70%+ for best leaf qualityโ˜…60%+ โ€” somewhat more tolerant
๐ŸŒฟ HabitClimbing โ€” needs a pole as it maturesSemi-climbing to sprawling
๐Ÿ“ˆ Growth rateSlow, especially when youngโ˜…Moderate
๐Ÿ’ง WateringEvenly moist; rots if left wetโ˜…Evenly moist; slightly more forgiving
๐Ÿ› Pest riskโ˜…Spider mites โ€” velvet hides themSpider mites, thrips โ€” glossy leaves show damage sooner
๐Ÿ’ฐ PriceHigh โ€” a premium collector plantโ˜…Moderate to high
๐ŸŽฏ DifficultyHardโ˜…Intermediate to hard

Choose Philodendron Melanochrysum ifโ€ฆ

  • โœ“You want the darkest, most velvet leaf texture in the genus
  • โœ“You can provide 70%+ humidity reliably, or grow in a cabinet
  • โœ“You are patient โ€” the best leaves come as the plant matures over years
  • โœ“You want the plant most collectors consider the centrepiece species
Philodendron Melanochrysum Problem Guide โ†’

Choose Philodendron Pastazanum ifโ€ฆ

  • โœ“You want large, glossy, dramatically rippled leaves instead of velvet
  • โœ“Your humidity sits nearer 60% than 70%
  • โœ“You want somewhat faster growth than Melanochrysum gives
  • โœ“You want a slightly easier entry into large-leaved collector Philodendrons
Philodendron Pastazanum Problem Guide โ†’

What They Have in Common

  • โ€ขBoth are large-leaved collector Philodendrons prized primarily for foliage
  • โ€ขBoth need very chunky, well-draining aroid mix and consistent moisture
  • โ€ขBoth take years to reach their most impressive mature leaf size
  • โ€ขBoth are toxic to pets and children if chewed

The Verdict

Pastazanum is the more forgiving of the two large-leaved collector Philodendrons and a reasonable step before Melanochrysum. Melanochrysum is the one people actually chase, but it wants consistently high humidity and real patience โ€” the young leaves look nothing like the dramatic near-black elongated leaves a mature plant eventually produces.

Sweety Competition Cup 2026 โ€” Grand Prize $400, registration open until 1.1.2027