Adenium arabicum 'Chadadum' — Black Crown Thai Hybrid Seeds

Chadadum ("Black Crown") fuses two elite Thai arabicum traits into one line: the flawless, radial crown branching geometry of the legendary Chada Tung Nang lineage and the intense, dark charcoal-to-purple-black epidermal pigmentation of a high-expression dark-skin arabicum. The structural symmetry of a royal Thai crown, wrapped in brooding dark bark — a collector-grade line that delivers both in a single plant.

FULL PRODUCT DESCRIPTION

Adenium arabicum 'Chadadum' (also seen as Chada Dum or Chadatungnang Dum) is an elite Thai arabicum cultivar built around a single, precise visual concept: perfect radial crown symmetry in pitch-dark skin.

The Royal Crown Silhouette
The defining structural trait is the self-branching geometry. Chadadum drops a perfectly uniform, symmetrical ring of thick, stubby primary branches straight from the upper rim of the caudex — growing upright and slightly outward at uniform angles, mirroring the multi-tiered spikes of a traditional Thai royal crown. The internodes are hyper-shortened, keeping the canopy tight and dense without corrective pruning.

The "Dum" Skin Patina
Rather than the smooth silver-gray or pale green skin of classic arabicums, Chadadum expresses a high concentration of dark pigments — bark matures into rich, matte charcoal-gray, deep oil-slick bronze, or dark purple-black coloration. The structural canopy takes on a stark, weathered, brooding appearance against the dark wood.

Caudex and Bone Structure
Heavy, muscular, wide-set base that stays compact and balanced — lateral mass in proportion with the pristine vertical branching above rather than sprawling into a loose mound.

Foliage and Flowers
Broad, fleshy, slightly obovate leaves with a velvety texture, frequently flushing deep crimson or violet along veins and leaf edges under high UV exposure. Standard star-shaped light pink to bright fuchsia flowers provide a brilliant, high-contrast pop against the dark wood at bloom time.

Zone 6 Notes
Both the crown symmetry and the dark bark depend entirely on unfiltered UV intensity — there is no compromise on this one. Low light causes the branches to reach and stretch, permanently breaking the uniform crown geometry, while the dark melanin production stalls and the bark reverts to smoky green. I grow Chadadum in my most intense direct-sun position outside after May 15 with no shade cloth and no filtered greenhouse plastic. Substrate is 80–90% inorganic (premium pumice, black lava rock, coarse perlite or hard-fired clay) — the root system on dark-skin dwarf lines has zero tolerance for retained moisture. Strict winter dormancy: when foliage drops, water stops completely. Cold damp media and a dark-skinned dwarf root zone is a fast path to fatal rot. Dry, cool, zero water until active spring growth resumes. Indoors before first hard frost in mid-October.

WHAT'S INCLUDED

• Fresh Adenium arabicum 'Chadadum' seeds (select quantity above)
• Germination instructions included with every order

GROWING BASICS

• Germination temp: 85–95°F
• Germination time: 5–14 days under ideal conditions
• Hardiness: Bring indoors before nighttime temps reach 50°F
• Light: Unfiltered maximum direct sun or high-output full-spectrum LED — non-negotiable for both crown symmetry and dark bark expression
• Media: 80–90% inorganic (premium pumice, black lava rock, coarse perlite or hard-fired clay)
• Dormancy: Strict hard winter rest — zero water when foliage drops; cold damp media causes rapid fatal caudex rot
• Skill level: Intermediate to advanced — light discipline and dormancy protocol are critical to preserving both aesthetic traits