D24 durian

D24, the durian Malaysians once called Sultan, wore the crown for decades before Musang King took it. This cultivar of Durio zibethinus was registered with Malaysia’s Department of Agriculture in 1934, and its formal entry in that registry reads blank, so the trade has always known it by the code alone. What people bought under the Sultan name was a balanced bittersweet fruit that taught a whole generation what a top durian should taste like.

I grow exotic fruit in San Diego County and keep a few grafted durians under heated poly, more as a tasting library than a commercial crop. On our Exotic Fruits and Vegetables plots the D24 graft is the one visitors recognize by reputation before they ever see the fruit. Working with it up close taught me why the variety held its throne so long, and why it slipped.

The durian that used to be king

D24 comes from Bukit Merah, a town straddling the Penang and Perak border in northern Peninsular Malaysia. The Sultan nickname traces to its old status as the fruit thought fit for state rulers, back when the trees produced so little that the fruit stayed rare. Through the 1980s and 1990s it was the premium durian, the benchmark every other variety got measured against.

D24 still holds a quiet record. It remains the most widely planted named durian in Malaysia and a large share of the everyday trade, even after Musang King captured the luxury tier and the headlines.

The flavor is where its staying power lives. D24 runs bittersweet with a milky body and a light alcoholic finish, and its aroma stays moderate rather than pungent. That restraint is why it works in a hotel room or a shared kitchen where a stronger variety would clear the space.

A durian does not keep its following by being the loudest. D24 held on by being the one people could actually finish.

Commercial buyers noticed that same balance. When McDonald’s Malaysia ran a D24 McFlurry as a seasonal item, it picked D24 over Musang King because the balanced flavor survives blending and freezing, and some experienced eaters still rank it above the pricier clone for exactly that harmony.

Is that fruit labeled Super D24 or Highland D24 actually better, or just marked up? After enough tastings I lean skeptical, since a plain D24 off an old tree often matches the premium sub-grades, and a premium tag can sit on average fruit.

Growing D24 without the fairy tale

The romantic history hides a blunt agronomic fact: D24 trees were notoriously low producers, which is the reason the fruit was scarce enough to reserve for royalty. A grower choosing it today trades peak yield for a name buyers already trust and a price the market accepts around RM12 to RM20 per kilo in Malaysia, well below premium clones.

Climate demands follow the genus. Durian wants daytime temperatures of 77 to 95 F, nights that hold above 60 F, humidity over 70 percent, and a slightly acidic soil around pH 5.5 to 6.5. My greenhouse D24 sets a fraction of what its canopy could carry, and I have come to read that as the clone being honest about its breeding rather than something I am doing wrong.

Do not plant D24 expecting a heavy hanger. The low-yield trait is built into the clone, so a first meaningful crop rarely arrives before year 4 or 5, and even then the tree carries less than a modern high-yield selection.

My soil mix is a sandy loam cut with about 30 percent perlite, and I feed young trees a half-strength balanced liquid every two weeks through the warm months. D24’s flesh is famously soft, and overwatering late in ripening makes it softer still, to the point where a lobe takes a thumbprint like setting concrete.

Are you planting D24 for yield or for a name your buyers already reach for? That single question decides whether this variety belongs in your ground or whether a higher-cropping cultivar serves you better. Working the cost and return math before you commit acreage keeps a sentimental choice from becoming an expensive one.

Ripeness, handling, and who should eat it

D24 punishes careless timing more than most varieties. When the fruit ripens unevenly, some lobes stay hard and waxy while others turn soft, so a buyer who opens it too early meets those tough patches head on. Dark patches in the flesh also run more bitter than the pale sections around them.

Uneven ripening is the classic D24 complaint. Judge readiness by give and aroma rather than by a date, because a hard section almost always means the fruit came off the tree too green.

Have you cut into a D24 and hit a band of firm, almost crunchy flesh? That is the fruit telling you it needed more time. I let a dropped D24 rest 24 to 48 hours at room temperature before opening, which softens the lobes and rounds off the sharper alcoholic edge.

The pale, evenly ripened lobes are where D24 earns its old name. A well-timed one is soft, milky, and sweet with just enough bitter edge, the fruit that made Malaysians fall for durian in the first place.

What sets a D24 apart at the stall

The husk gives D24 away once you know the tells. The fruit is small to medium at 1.5 to 2 kilograms, ellipsoidal or slightly heart-shaped, with a short stem, a lopsided profile from bulbous bumps on one side, and a small brown ring about the size of a nickel at the base. In Malaysia its season often runs December through February, later than the mid-year premium clones.

• Spikes are sharp and rounded, clustered tightly enough to partly hide the seams.
• Flesh runs pale cream to mustard yellow, with darker patches tasting more bitter.
• Seeds are large, so edible flesh per fruit is lower than the size suggests.
• Aroma is present but moderate, never the wall of scent a Musang King throws.

D24 is the durian I hand a nervous first-timer. Its moderate aroma and balanced flavor let a new eater taste the custard character without the sulfur blast that sends people running.

Handling matters as much as choosing. That soft flesh bruises if you look at it wrong, so the trip from stall to table is where a fine fruit gets ruined.

1. Carry the whole fruit by the husk, never by squeezing the lobes through the shell.
2. Open it within a day of purchase, since the flesh degrades fast once fully ripe.
3. Separate the lobes gently and eat the palest sections first, saving darker bitter ones for last.
4. Refrigerate leftovers sealed, because the aroma migrates into everything nearby within hours.

Can you get a ripe D24 home without turning the lobes to paste? If your answer is a shrug, buy it opened and packed, because the whole-fruit romance is not worth a ruined durian.

Timing the harvest or the purchase to that narrow window of even ripeness is the whole game with this variety. Estimating when a naturally dropped fruit hits its peak, and how long you have before it turns, saves both a grower and a buyer from the tough-flesh disappointment.

Where D24 fits now

D24 lost its throne to Musang King, and it is not coming back to the luxury tier. What it kept is more durable than a crown: a milder aroma that travels into shared spaces, a price that lets people eat it by the kilo, and a balanced profile that purists still defend against the flashier clones. For a grower, it is a sentimental plant with a modest yield, so the math has to justify the name.

For an eater, especially a first-timer, this is still the durian I reach for when I want someone to understand the fruit rather than survive it. A well-ripened Sultan does the job that no premium clone does better, which is to make a skeptic ask for a second lobe.