Avoiding remodeling mistakes, Dahlia Society tuber sale, habitat for bees and world's largest textile garage sale

If you're tired of your outdated kitchen or bathroom, get some expert advice before diving into a DIY project. This seminar, "Avoiding Remodeling Mistakes," helps homeowners dodge some common pitfalls. Topics include maximizing cabinet storage, budgeting, design trends and identifying quality materials and service. 9 a.m. and noon April 14. Free. Crystal Kitchen + Bath, 3620 Winnetka Av., N., Crystal. crystalkitchen.com.

Shop for thousands of show-quality dahlias at this one-day-only tuber sale, sponsored by the Minnesota Dahlia Society. Choices include rare and exclusive varieties. Dahlia growers will be on hand to answer questions about planting and growing, as well as helping with selections. Meet gardeners from the club and learn about their events. Proceeds from the sale support speaker programs, garden tours and more; 9 to 3 p.m. or until sold out, April 15, Bachman's Garden Center, Heritage Room, 6010 Lyndale Av. S., Mpls.

One of the most critical subjects affecting native bee populations is the availability of habitat. Maplewood Nature Center hosts training for gardeners, landscapers and natural resource professionals who are interested in supporting pollinators. Learn practical approaches to creating and managing a variety of nesting and overwintering habitats. Led by Sarah Foltz Jordan of the Xerces Society, the course includes field and classroom components, including a search for active nests of stem-nesting bees; 1 p.m. April 21. Free. Maplewood Nature Center, 2659 E. 7th St., Maplewood. Preregister by April 18 at maplewoodnaturecenter.com.

Yards upon yards of fabric, yarn, looms, notions and more are available for the plucking at what is being called the world's largest textile garage sale, hosted by the Textile Center. Artists, students and crafters can shop the warehouse for fiber finds and hidden treasures to create clothing and works of art. Preview sale, 5:30 to 8 p.m. April 13; $30-$35. Garage sale, 9 a.m. to 4 p.m. April 14; $3-$5. UMN ReUse Warehouse, 883 29th Av. SE., Mpls. textilecentermn.org/garagesale.