I've seen several recommendtions for using a Bluebonnet Inoculant when planting Bluebonnets.
"For best success, we strongly suggest using Bluebonnet inoculant (to assist in fixing nitrogen into soil and making a healthier plant)."
Where can I find this inoculant? I don't see any reference to it in seed catalogs etc.
First, if you bought your bluebonnet seeds, they may have already been inoculated. If so, then you don't need to apply more. The bacterium Rhizobium is the inoculant specific for bluebonnets and other members of the genus Lupinus. Some soils already have naturally occurring Rhizobium present. If that is so, then you wouldn't need to inoculate your seeds. You can determine if your soil has Rhizobium by looking at the roots of one of the bluebonnets growing there. If the bacterium is present, the roots will have rounded bumps, called nodules, growing on them that contain the bacterium.
You may be able to find the inoculant at local nurseries. To find a list of local nurseries that specialize in native plants in your area, visit the National Suppliers Directory on the Wildflower Center web page. The Native Plant Society of Texas on their web page also has a list of native plant nurseries as does the Texas Parks & Wildlife web page. If you can't find any locally, you might try other cities or other areas. For instance, checking the nurseries in the Midwest, I found one, Prairie Moon Nursery in Winona, Minnesota, that has Lupinus (bluebonnet) inoculant for sale in its online store.
If you haven't already found it, there is a 2-page PDF article pertaining to growing bluebonnets in the Native Plant Library on the Wildflower Center web page that you might find useful.
More Wildflowers Questions
Mutation in bluebonnets from Elgin TX April 16, 2013 - What causes bluebonnets to mutate..grow as if three or four are combined into one flower on one very flat, wide stem. I have these in my yard; they are beautiful! I have taken several pictures. view the full question and answer
Native plants for an outdoor wedding in New York February 06, 2009 - I am planning an outdoor wedding in New Rochelle, NY in May. We would like to use native plants. Can you suggests some that we can use in the bouquets and as potted plants? Thanks view the full question and answer
Plants for winter color in native wildflower meadow backyard February 28, 2006 - I am establishing a wildflower meadow in my backyard (150'x50'). it will have native Texas wildflowers, Buffalo Grass and Blue Gramma grass. Is there any plant that you can recommend for winter inte... view the full question and answer
Native plant bibliography March 20, 2004 - What book do you recommend for identifying the native plants and wildflowers of my region? view the full question and answer
Survivability of Texas wildflower seeds in Zone 5A or 5B October 13, 2006 - What are the recommended hardiness zones for Texas wildflowers? Could these seeds survive in a 5A and 5B climate? If so, when would be the correct time to plant seeds for zone 5A/5B? view the full question and answer