

Hardy Plant Society of Oregon (HPSO) presents “Nimble Gardening in an Evolving World” – the theme for the Portland Study Weekend 2025. This four-day gardening conference will take place at the Portland Crowne Plaza Hotel, June 27-30, 2025. Deepen your gardening knowledge and network with these activities:
- Friday evening lecture (and reception) and Saturday and Sunday morning lectures by six internationally renowned speakers
- 20+ open gardens for self-guided touring:
- Friday June 27, 2025, 10:00 AM - 3:00 PM Open Gardens, Inner Portland Area
- Saturday June 28, 2025, 1:00 PM - 5:00 PM Open Gardens, West Linn / Clackamas County / Oregon City
- Sunday June 29, 2025, 1:30 PM - 5:00 PM Open Gardens, Western Portland Metro Area
- Monday June 30th, 2025, 10:00 AM - 3:00 PM Open Gardens, SW Washington
- Optional Soiree celebration (Saturday evening) at the exquisite Spanish-inspired venue Villa Catalana Cellars
- Plant sale with phytosanitary inspections for out-of-country guests
- Book signing and sales
- Art sales in the gardens
- Botanical display
- Door prizes
- Silent auction, benefiting HPSO grants program
- Receptions and morning coffee breaks to socialize with fellow gardeners who share your passion
Registration cost
Early bird discount from Feb 01 to Apr 30: $220 On or after May 01: $260 Optional Soirée (Saturday evening) ticket is $100.

Problems registering? Please send an email to [email protected] and staff will process your request on Monday, Feb. 3rd, in the order we have received them.
Details for Conference Hotel and Parking
The event is being held at the Crowne Plaza Hotel in Portland. Address: 1441 NE 2nd Avenue, Portland, OR 97232 [map]
A limited number of hotel rooms are available at the group rate of $190 / night for Thurs, Fri, Sat and Sun nights (single or double occupancy). Provide the group name “Hardy Plant Society of Oregon” when making your phone reservation with the hotel at (866) 242-1264 (call center is open 24/7). Offer expires May 27, 2025. All group room rates are subject to applicable state and local taxes & fees and are subject to change (currently 16%).
Overnight self parking at the hotel is currently $27/day and event self parking cost is currently $15 (price subject to change).
GROW WITH US
Join one of the West Coast's largest gardening communities and meet other gardeners who share your passion.
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