The Species Lily Preservation Group (SLPG) is the only group in the world entirely dedicated to species lilies.  It is affiliated with NALS, but has separate Officers, Directors, membership, and dues structure.

Membership in the SLPG includes the semi-annual color bulletin, “The Species Lily”, filled with information about species and growing them in the garden. Members are also able to order species bulbs from the SLPG fall bulb sale, including many are rare species commercially unavailable. 

Dues are $12 per year, or $34 for a three-year membership (US or Canadian funds). Membership runs from January 1 through December 31.

The goals of the SLPG are:

• Growing as many species lilies as possible, especially those rare and in danger of extinction.
• Making excess species bulbs available to members.
• Collecting, preserving, planting, growing and distributing species seed.
• Collecting all possible information on each species: its habitat, distribution, cultural needs, etc.
• Disseminating cultural information on each species.
• Assembling a slide and photo record of all species lilies.
• Identifying areas where specific species grow and seeking protection for these areas.