Roots in the Mud: Phang Nga Plants 3,000 Mangroves at Takua Pa

Crouch at the waterline of any Phang Nga channel at low tide and you are looking at the most productive real estate on the Andaman coast. The stilted prop roots of Rhizophora mucronata — the tall-stilted mangrove that lines most of Phang Nga Bay's tidal channels — trap sediment, nurse juvenile fish and shrimp, and absorb wave energy with a quiet efficiency no concrete seawall can match.

On June 8, 2026, the Mangrove Forest Resource Conservation Center No. 10 in Takua Pa district put three thousand new seedlings into exactly this kind of ground. The planting was carried out in collaboration with local partners at the centre's nursery grounds in Phang Nga, and is part of the ongoing effort to restore the bay's fringe forests — ecosystems that once covered the coast in dense, navigable stands before aquaculture conversion and coastal development took their toll. [ref:1]

Why June?

The timing is deliberate. June sits at the threshold of the southwest monsoon — the rains have arrived, groundwater tables are high, and the humidity that kills young seedlings in drier months is now their best ally. The Center's field teams have learned, through decades of planting cycles, that seedlings established in June will have three full monsoon months to anchor their root systems before the drier northeast winds return in October.

Rhizophora mucronata grows fastest when its prop roots — those arching, knee-height legs that give the tree its unmistakable silhouette — can reach tidal mud twice a day. Each tidal cycle bathes the roots in oxygen-rich water and retreats to let them breathe. A healthy prop-root system can add thirty centimetres of new root growth in a single rainy-season month.

What Three Thousand Trees Actually Mean

Ecologists use a useful rule of thumb: one hectare of healthy mangrove forest can support up to two thousand kilograms of fish biomass per year. Juvenile snapper (Lutjanus spp.), grouper (Epinephelus spp.), and mud crab (Scylla serrata) — the same species that appear in the seafood markets of Takua Pa and Khao Lak — spend the critical first months of their lives weaving between prop roots, feeding on organic material that falls from the canopy above.

Three thousand trees planted in June 2026, if they establish at the typical survival rate of around 70 percent, will create a forest stand of roughly 1.5 to 2 hectares within five to seven years. That is enough to provide meaningful nursery habitat for the small-scale fishers working the channels between Takua Pa and Thai Mueang — and enough to reduce measured wave run-up along that stretch of coastline by a calculable margin. [ref:2]

The Longer Count

Phang Nga Province holds the largest remaining stand of primary mangrove forest in Thailand — approximately 38,000 hectares, most of it inside Ao Phang Nga National Park. The Park's tidal channels form a navigable labyrinth accessible by longtail boat and kayak, where the canopy closes overhead and the water turns the colour of strong tea from tannins leached by the roots.

The fringe forests outside the Park — the ones lining working channels and fishing villages — have faced heavier pressure. The 2004 Indian Ocean tsunami stripped several kilometres of coastal margin in hours, setting back decades of slow-growth recovery in a single morning. Since then, the Mangrove Conservation Centre network across Phang Nga and Ranong has replanted in stages, working with local tambon councils to identify priority restoration sites.

The Takua Pa nursery grows propagules — the pencil-shaped seeds that fall directly from Rhizophora trees and are ready to plant without any germination stage. Each June planting draws on propagules collected during the previous dry season and held in shaded nursery beds until the rains open the ground.

What to Watch For

If you travel the Khao Lak coast in the next five years, the new planting will be almost invisible at first — low green shoots no taller than your knee, staked to keep them upright in the tidal current. By year three, they will reach head height. By year seven, the canopy will have closed, the channel will cool into shade, and the mud beneath will be alive with the click and rustle of small crabs moving through the leaf litter.

That is how the Andaman coast renews itself. Not dramatically — slowly, root by root, until the bay closes over and becomes whole again.