The Karakoram is famous for ice and rock. Less famous is what grows in the corners between them. Inside CKNP’s 10,557 km², our biodiversity team has documented more than 700 plant species across four ecological zones, from the riverside birch groves of the Astore valley to the cushion plants holding on at 5,000 m. Sara on the research team has spent four field seasons cataloguing flora across the park’s southern drainages. Here is what grows in CKNP, where to find it, and what makes the Karakoram’s plant communities unlike anywhere else in Pakistan.
The four ecological zones of CKNP
1. Riparian and valley zone (2,000–3,000 m)
The lowest belt of the park, along the Indus, Shigar, Hushe and Braldu rivers. This is where you actually find forest in the Karakoram — small but significant patches of:
- Himalayan birch (Betula utilis) — white-papery bark, found in stands above the Astore valley and along the Bagrote drainage. Sacred in pre-Islamic Balti tradition; the inner bark was used for manuscripts in Tibet.
- Blue pine (Pinus wallichiana) — long needles, present in scattered pockets up to 3,200 m.
- Himalayan juniper (Juniperus excelsa, J. squamata) — the most widespread “tree” in the park, often taking the form of a 3-metre shrub at altitude. Some Astore valley junipers are dated to 1,000 years old.
- Willow (Salix spp.), poplar (Populus alba, P. nigra) — cultivated along irrigation channels in every Balti village; also wild along the river bottoms.
- Sea-buckthorn (Hippophae rhamnoides) — thorny shrub with bright orange berries, prized in Hunza for juice, jam and traditional medicine.
- Apricot (Prunus armeniaca) — cultivated everywhere, the defining fruit of Hunza and Baltistan, with feral orchards along old field boundaries.
This is the zone most travellers actually walk through — Askole, Hushe, Shigar, Khaplu, Hunza. Spring (April–May) sees apricot and walnut bloom; autumn (October) the poplars turn gold along the Indus.
2. Sub-alpine zone (3,000–3,800 m)
Above the village belt and below the alpine grasses. Tree growth here is stunted, twisted, and uniformly thin — krummholz formations of:
- Stunted juniper — rarely above 2 m, often almost prostrate.
- Wild rose (Rosa webbiana), cotoneaster, barberry (Berberis) — thorny shrubs that hold the slope above riverbeds.
- Ephedra (Ephedra gerardiana) — the plant from which the medicinal alkaloid was originally extracted; now common in the park’s southern slopes.
- Tamarisk on saline soils.
This is also where most of the medicinal-herb collection happens. Local healers (amchi in Balti) gather salajeet, taxus berries, juniper resin, and roots of rhizomatous herbs from this belt.
3. Alpine zone (3,800–4,800 m)
Above timberline. Treeless meadows, dwarf shrubs, sedges, mosses, lichens. Inflorescences are short, leaves often hairy, root systems deep. The growing season is six to eight weeks. This is the belt that supports the park’s grazing economy — ibex above, livestock below — and the belt that feeds the marmots, the chukar and the snowcock.
Common species in flower from late June through August:
- Edelweiss (Leontopodium ochroleucum) — the Asian sister of the Alpine species.
- Karakoram primrose (Primula macrophylla) — deep purple, head-down flowers, indicator species of well-drained alpine.
- Himalayan blue poppy (Meconopsis aculeata) — rare inside CKNP; recorded in scattered pockets above Hushe.
- Karakoram aster (Aster flaccidus), gentian (Gentiana spp.), saxifrage (Saxifraga), androsace.
- Sedges and grasses — Kobresia, Carex, the dominant alpine pasture genera.
- Alpine onion (Allium) — harvested by porters and shepherds.
If you are walking the Baltoro in late July, take an hour at the rest stops above Paju and look at what grows in the gravel between the boulders. The diversity is more than the eye sees.
4. Nival zone (4,800 m and above)
Permanent snow line and above. Cushion plants (Saussurea, Stellaria, Arenaria) hug the rock. Lichens of every shade of orange, grey and black coat the stones. Plants here grow a few millimetres a year. The world record for the highest-recorded vascular plant is from the Karakoram — a cushion saxifrage at 6,200 m.
The forest question
People ask: where is the “forest” in this national park? The honest answer is that CKNP is not a forest park in the way that a Khunjerab or Deosai or Shogran is. It is a glacial-alpine park, and what forest exists is in narrow patches:
- The Astore valley (just on the park’s southern boundary) holds the most substantial Himalayan birch and juniper stands — the Astore juniper grove near Rama Lake is one of the oldest juniper forests in Pakistan.
- The Shigar valley floor and the lower Bagrote have small blue-pine and willow communities.
- The Hushe valley below Saicho holds dwarf birch and shrub willow at altitude.
- The cultivated landscape of every Balti, Burusho and Wakhi village is, in effect, a working agroforestry system — poplar, willow, walnut, apricot, mulberry, apple, all grown along irrigation kuhls.
Beyond these, the park is functionally treeless. Fertile valley bottoms account for less than 1% of CKNP’s surface area. The other 99% is rock, ice, and alpine pasture.
Threats and management
The forest patches that do exist are under pressure:
- Fuelwood collection. Juniper is the preferred fuelwood; a thousand-year-old tree burns for one winter. We work with buffer-zone village councils on alternative-fuel schemes (LPG subsidy, solar) to take the pressure off.
- Grazing. Livestock grazing in the alpine zones suppresses regeneration of birch and juniper saplings. Rotational grazing agreements have helped in the Astore conservancy.
- Climate. The treeline is moving up by roughly 3–5 m per decade in this region — documented through Ev-K2-CNR’s long-term monitoring — which is good news for marginal forest patches but bad news for the alpine specialists above.
- Invasive species. Salt cedar (Tamarix ramosissima) is spreading in the Indus valley, displacing native willow and seedlings.
Reforestation in the buffer zone is mostly community-led: every spring the village conservancies plant willow, poplar and apricot saplings along irrigation channels. Reforestation in the higher zones is, frankly, almost impossible — you cannot speed up a juniper.
Salajeet, taxus and the medicinal flora
The medicinal-plant tradition of Gilgit-Baltistan is alive and economically significant. Salajeet — a tar-like exudate scraped from rock crevices in the alpine zone, technically a humic acid concentrate, sold internationally as “shilajit” — remains a major regional export. Taxus berries, juniper resin, ephedra, and dozens of root species are still harvested traditionally.
The conservation problem is straightforward: unregulated collection threatens the populations. Through the SEED programme our team supports community-led collection quotas in the Astore and Bagrote drainages, and we are mapping the source populations to inform sustainable-yield policy.
Where you can see the flora
- Rama Meadow (Astore valley, 3,300 m) — ancient juniper grove, alpine meadow flora through July, sometimes blue poppy.
- Bagrote valley — the wettest drainage in CKNP, with the densest concentration of native trees in the park.
- Hushe valley (Saicho through to Hushe village) — transition forest to alpine, all in one walk.
- Above Paju on the Baltoro — last vegetation before the glacier; alpine flora at the upper edge of its range.
- Naltar valley (just outside CKNP boundaries) — if you want a true Karakoram forest experience, this is the closest the region gets.
For botanists and researchers
CKNP’s flora is incompletely documented. We welcome research permit applications from herbaria, botanical gardens and university departments, particularly for systematic survey work in the under-studied drainages (Khurpa Lungma, Bilafond, upper Khurdopin). The full plant species checklist for the park is approximately 712 species at the time of writing — we know there is more.
For the wildlife that depends on this flora, see our Karakoram wildlife guide. For the trekking corridors that pass through these zones, our K2 Base Camp trek and treks & valleys hub. For the conservation context, our Ev-K2-CNR / SEED legacy page.
