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Every spring, Nepal's hills blaze red, pink, and white as rhododendron forests bloom. Guide to the best rhododendron treks — Poon Hill, Mardi Himal, Langtang — and exactly when to catch the spectacle.
- Late March to mid-April is the sweet spot for catching rhododendron forests in full bloom across a range of elevations.
- The bloom climbs the mountain with the season: lower hills flower from mid-March, higher forests peak through April into early May.
- Ghorepani Poon Hill and Mardi Himal are the classic rhododendron treks; Langtang, ABC, and Khopra Ridge are superb alternatives.
- Spring is peak season — book ahead and start early to beat afternoon haze.
Nepal's spring spectacle
The rhododendron (lali gurans) is Nepal's national flower, and each spring the middle-hill forests erupt into colour — entire hillsides of crimson, pink, and white blooms beneath the snow peaks. For many trekkers, spring rhododendron season is the most beautiful time to walk in Nepal.
When to go
The bloom moves up the mountain with the warming season. Lower elevations (1,500–2,500m) flower from mid-March; higher forests (2,500–3,500m) peak through April into early May. Late March to mid-April is the sweet spot for catching forests in full colour across a range of elevations.
The best rhododendron treks
Ghorepani Poon Hill: The classic rhododendron trek — the forests between Ulleri, Ghorepani, and Tadapani are famous for dense, vivid blooms, with the Annapurna and Dhaulagiri ranges behind.
Mardi Himal: The lower forest sections are gorgeous in spring, leading up to the high camp.
Langtang Valley: Rhododendron and pine forests colour the lower valley beautifully.
Annapurna Base Camp: The Chhomrong and forest sections bloom richly in spring.
Khopra Ridge & Mohare Danda: Quieter community-trail alternatives through superb rhododendron forest.
Ghorepani Poon Hill
The classic — dense, vivid forests between Ulleri, Ghorepani, and Tadapani, with Annapurna and Dhaulagiri behind.
Mardi Himal
Gorgeous lower forest sections in spring, climbing to the high camp and its ridge views.
Langtang Valley
Rhododendron and pine forests colour the lower valley beautifully in spring.
Annapurna Base Camp
The Chhomrong and forest sections bloom richly on the way to the amphitheatre.
Khopra Ridge & Mohare Danda
Quieter community-trail alternatives through superb rhododendron forest.
Why spring trekking is special
Beyond the flowers, spring brings warm days, longer light, blooming magnolias and orchids, active birdlife, and excellent (if occasionally hazier) mountain views. It's the Himalayan climbing season too, so the high camps buzz with energy.
Practical notes
Spring days are warm at lower elevations but nights stay cold up high — pack layers. Afternoon haze can build later in spring, so start early for the clearest mountain views. Book ahead: spring is peak season, second only to autumn.
The verdict
If you want Nepal at its most colourful, time a Poon Hill or Mardi Himal trek for late March to mid-April. Walking through tunnels of red rhododendron with white peaks above is one of the Himalaya's great seasonal joys.
Frequently asked questions
When exactly do rhododendrons bloom in Nepal?
The bloom climbs with elevation: lower hills (1,500–2,500m) flower from mid-March, while higher forests (2,500–3,500m) peak through April into early May. Late March to mid-April catches the widest range in full colour.
Which is the best rhododendron trek for first-timers?
Ghorepani Poon Hill is the classic and most accessible choice — dense forests, modest altitude, and superb Annapurna–Dhaulagiri views. Mardi Himal is a slightly longer, quieter alternative.
Ready to time your bloom-season trek? Compare your options on our best treks in Nepal guide, check what to bring with the trekking packing list, or get in touch to plan spring dates.
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