Northwest  Perennial  Alliance

Sharing a Passion for Gardening
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CALENDAR -  Events, Lectures, Classes, Workshops, & Open Gardens

Upcoming events

    • May 06, 2022
    • September 25, 2022
    • NPA Member's Gardens

    Weekends, May through September 2022

    Open Garden Tours

    MEMBERS ONLY - Join NPA Today!

    Tour the lovely gardens of NPA members almost every weekend from May through September. This year there are over 100 gardens to tour throughout the Puget Sound region; most are private gardens, with a few public ones included as well.

    Members find these gardens through the Open Gardens Directory, mailed to members in late April. This book includes garden locations, driving instructions, and open dates with hours. Check out nearby NPA Business Members when you're out and about, many offer discounts to NPA members.

    Any bonus open gardens added to the published itinerary are noted in NPA's twice monthly e-newsletters, so be sure to check this resource regularly.

    MEMBERS ONLY:  You must be an active member of the Northwest Perennial Alliance to tour our member's open gardens. Join now or renew your membership to receive our exclusive Open Gardens Book, which is your ticket to enter all the beautiful gardens on our Open Garden weekends.

    • June 16, 2022
    • June 20, 2022
    • Bellevue / Seattle

    June 16-20, 2022


    A Partnership with the Earth

    Gardens connect us in many different ways. With others who share this same passion, with ourselves as a place of respite and joy, and with the Earth that needs our care and assistance. These connections are vital to gardeners, and add to the pleasure of gardening. NPA’s Hardy Plant Study Weekend is all about exploring these connections.

    It's been 4 years since NPA hosted Study Weekend, and we’re thrilled to host again in 2022. This regional gardening event rotates locations with our friends in the Hardy Plant Society of Oregon in Portland, and the Hardy Plant Groups of Vancouver and Victoria in British Columbia.

    Study Weekend is filled with top-notch seminar speakers, 31 stunning and inspiring gardens to visit, a plant sale with specialty nurseries, and fun social events where you can enjoy the company of other plant people from all over the Pacific Northwest. This event is open to everyone.

    CLICK HERE to see detailed information about this event, including bios for Speakers, registration information, and more.

    2022 Study Weekend Schedule:

    • Thurs, June 16th – Bonus Open Garden Tours, located further away from Seattle
    • Fri, June 17th – Open Garden Tours, located within Seattle/Bellevue area
    • Fri, June 17th – Garden Soiree Evening at Bellevue Botanical Garden
    • Sat, June 18th – Garden Seminars & Plant Market, Meydenbauer Center, Bellevue
    • Sun, June 19th – Sunday Coffee & Donuts at Bellevue Botanical Garden
    • Sun, June 19th – Open Garden Tours, located within Seattle/Bellevue area
    • Mon, June 20th – Bonus Open Garden Tours, located further away from Seattle

    Study Weekend Costs:

    •  Hardy Plant Study Weekend Registration Fee – limited to 550 – $185 per person
    • Optional  Garden Soiree Evening – limited to 175 – $75 per person
    • Optional  Boxed Lunch at the Seminar Event – $30 each
    • Optional  Mini-bus Open Garden Touring (June 17 & 19 only) - TBA

    Important Details!

    Hardy Plant Study Weekend Tickets

    There are TWO registrations options for this event:

         1) Register/Pay to attend Study Weekend - DO THIS FIRST

         2) Register/Pay to attend the Garden Soiree - Go back and register for this Second

    Attendees MUST purchase a ticket to Study Weekend in order to attend the optional Garden Soiree! FIRST register and pay for your Study Weekend ticket ($185) - then go back and register and pay for the Garden Soiree ($75).

    We're limiting tickets to 2 per registration! This allows couples to purchase tickets at the same time, but groups must register separately. Thank you for your understanding of this policy.

    Waitlist - if tickets are sold out for either event, you should add your name to the Waitlist as soon as possible, as any future available tickets are offered to those on the Waitlist in the order that they added their name to this list!


    1)  Tickets are limited to 2 per registration, groups need to register separately

    2)  You must buy a Study Weekend ticket in order to attend the optional Garden Soiree

    3  NO GUESTS are allowed to attend Study Weekend Open Gardens, all visitors must purchase a ticket

    • June 17, 2022
    • June 19, 2022
    • Meydenbauer Center

    Hardy Plant Study Weekend

    Carpool Name Exchange

    Friday and Sunday ONLY - June 17th & 19th

    Register by May 21, 2022 - No Fees Collected

    Would you like to carpool to the Friday and Sunday open gardens? If so, REGISTER and add your name and details to a list that NPA will share with others interested in doing the same. We will compile and share information by May 24, 2022.

    Then it's up to YOU to contact people on this list and work out details for your carpool.  Sorry, NPA doesn't have volunteers to set up carpools, we are just facilitating the sharing of information between those interested.

    Suggestions for setting up a carpool (suggestions only):

    • Review the shared emailed list of HPSW attendees interested in carpooling to find others in your area - email them to see if they are still interested, and finalize carpool details
    • Meet each other at a local Metro Park & Ride location (See King County Metro's complete list HERE, includes hours open and # of parking spaces) - Please note - Parking Rates apply!
    • Meet at 9:30 am, and plan to return about 4:30 pm
    • Passengers pay drivers $5-10 per day
    • Establish rules for wearing facemasks in the car, stopping for lunch and restroom breaks, etc.
    • Drivers should let passengers know which gardens they plan to tour each day

    • June 18, 2022
    • Meydenbauer Center

    Hardy Plant Study Weekend

    Order your Boxed Lunch for Saturday's Garden Seminars

    Place orders before May 17th - see below

    Attendees have the option to order a BOXED LUNCH for the all-day Garden Seminars & Plant Sale on June 18th at the Meydenbauer Center.

    Lunches are $30 each - and there are 3 choices:

    Sandwich #1 - Smoked Turkey & Swiss Cheese with mixed greens, bacon, and avocado on sourdough bread.  Also includes:  whole fruit, potato chips, cookie, and choice of soda or bottled water.

    Sandwich #2 - Caprese Ciabatta with fresh mozzarella, marinated tomatoes, basil pesto, and balsamic drizzle. Also includes:  whole fruit, potato chips, cookie, and choice of soda or bottled water. (This sandwich is Vegetarian)

    Salad - Maitake Mushroom & Mandarin with mixed greens, cilantro, carrots, green onions, sesame crisp, and poppy seed dressing. Also includes:  whole fruit, potato chips, cookie, and choice of soda or bottled water. (Salad is Vegan and Gluten Free)

    Place your order before May 17, 2022 in order to receive your lunch ticket in your mailed Participant's Packet. Orders after this date can pick up lunch tickets at the Garden Seminar event. 

    To Order - click REGISTER - then click on the lunch option of your choice, and complete payment online. 

    • August 06, 2022
    • Aaron Education Center at Bellevue Botanical Garden, 12001 Main St. Bellevue, WA

    Saturday, August 6, 2022

    1st Annual NPA Border Gala

    Mark your Calendar for this Not-to-be-Missed Social Event!

    Join NPA for our social event of the year. There will be food, wine, interesting speakers, and lots of garden-related fun. All to raise money for the gorgeous, and popular, NPA Perennial Border. 

    Watch for details on NPA's website and in our Member E-newsletters.

    • September 04, 2022
    • 10:00 AM - 2:00 PM
    • In-person at the Bellevue Botanical Garden

    Sunday, September 4

    Fall Plant Sale at Bellevue Botanical Gardens

    10 am to 2 pm

    Fall is the perfect time to plant! Join NPA to buy plants from a select group of local small nurseries and specialty growers who sell an amazing collection of perennials, shrubs, ferns, grasses and more.

    This is your chance to shop from the best, all in one location, and bring home many new treasures to enhance your garden. This is a 'Farmer's Market Style' plant sale where you purchase plants directly from each seller - bring your own small wagon/cart.

    Visit the NPA Border after shopping!

    • September 18, 2022
    • 12:00 PM - 2:00 PM
    • Aaron Center at Bellevue Botanical Garden
    • 150

    NPA's Annual Membership Meeting, Lecture & Plant Sale

    Sunday, September 18, 2022  Noon to 2 pm

    Join NPA for this in-Person Event at Bellevue Botanical Garden.

    Noon - Plant Sale: Plants offered by NPA

    Noon - Social Time: Iced Tea, Nibbles, Cookies

    12:45 pm - Annual General Membership Meeting - a short meeting to introduce Officers and confirm the election of Board Members

    1 pm - LECTURE - Speaker TBA

    Free to NPA Members, Reservation Required!

    Only Household Memberships are allowed to make reservations for 2 members - Due to limited seating we ask Members to please not bring non-member guests - Please bring a copy of your emailed reservation receipt - Thank you!

    Room Size Limit is 150 Seated - Reservations open in August

Contact NPA:   425-647-6004

Mailing Address:   PO Box 1034  Bellevue, WA  98009-1034

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