There are currently 12 accessions of at least 362 seeds in the seed bank of the Lady Bird Johnson Wildflower Center (LBJWC). These seeds were collected in Edwards, Real, and Val Verde Counties between 2001 and 2015. One individual of Texas snowbell is in cultivation at the Wildflower Center. LBJWC has experience propagating this species for horticulture or restoration.

As of August 2022, San Antonio Botanical Garden has collected seed from this species in the wild. San Antonio Botanical Garden also holds this species in living collection and has conducted propagation research.

My [Lois Sturm, Selah Bamberger Ranch Preserve] interest in the Texas Snowbell began in 1994. At the time, I was volunteering at Dolan Falls for The Nature Conservancy. They had recently acquired the ranch on the Devils River in Val Verde County of Texas. Biologists had discovered a large colony of mature plants along the river. This was the largest colony known at the time. Seeing the beautiful bloom and hearing about the snowbell’s endangered status motivated me to action.
After seven years of making landowner contacts, we were making new discoveries and collecting seeds from which we grew plants. The first introduction was in 2003. We have continued planting every year since then and now have 682 plants alive and well in the Nueces and Devils River watershed. Fortunately for us, the area where we planted had adequate rainfall except for 2008. Every plant was protected with a sturdy corral 6 foot in diameter. Each corral is strong enough to keep out cattle, deer and wild hogs and large enough to allow for some future regeneration. In 2008, one of our 2004 introductions produced viable seeds.
Most of our plants are in semi-shade conditions. Historically, there has been no care other than some weeding when taking annual growth measurements. We use weed barrier and “pasta” (cut grass) to slow down moisture loss. Each corral has three plants and an aluminum tag with a number. Records are kept regarding seed collection and grown plants are planted in the watershed from which the seeds were collected.
The germination rate on snowbell seeds is very high. After 60 to 90 days in stratification, we place the seed in a four inch container and within 60 days step the plant up to a one gallon container. It takes two years in the one gallon container to develop a good root system. We have planted them after one year, but with less success.
In 2008 all the ranches we planted on suffered a fifty year drought and record heat. We lost over 50% of the plantings made in October, November and December of 2007. (These have been replaced.) But of great interest is that of over 500 plants that had been planted one year or more, 99% not only survived the drought but also added growth.
Steven Fulton, our ranch biologist, is doing graduate studies on the snowbell to learn what pollinates it, what eats it and what disperses the seed. His findings will be published in 2011.