Update on two "Iris Parking" sites.

June 19, 2020 Covington, La.

Gary Salathe and Destiny Simon of the Louisiana Iris Conservation Initiative (LICI) did a workday on Friday, June 19th collecting I. giganticaerulea irises from two locations. The I. giganticaerulea iris is one of five Louisiana iris species, four of which are native to Louisiana.

The irises were removed from two sites where they were planted as an experiment started five years ago to see if places could be found where they could grow without any maintenance. The plan was to have the irises grow in bogs that were found in various locations in St. Tammany parish so that they could be thinned out every other year to use in iris restoration projects. The process has been nick-named as "parking irises", in that they are only meant to stay in these locations as a way to grow them out to be used in future projects, not as a permanent home to be on display to the public.

The two volunteers thinned out irises from two clumps in each location and ended up with about 300 plants. These add to a total of about 1,000 irises that have been removed from the two locations over the last few years.

The first location is a "dry" detention pond for a subdivision near the Goodbee crossroads in western St. Tammany parish. The parish requires all rainwater runoff from new subdivisions to be funneled to areas like this, which are at the low point of each subdivision's drainage system located at its end. There is a choke point at the outflow of the detention pond so that it fills with rainwater from the subdivision during a heavy rain. A single culvert that drains the pond causes the water to be "detained" so that the water leaving the subdivision’s drainage system, as the detention pond slowly drains off, leaves at the same speed as it did from the land before it was developed. This keeps the waterways down stream from the subdivision from overflowing and backing up because of water rushing into them because the drainage of the land upstream has been improve by its being developed.

St. Tammany parish has hundreds of these detention ponds.

A "wet" detention pond is a pond that holds water, which is usually located within the subdivision where it can be seen to add to the beauty of the neighborhood. The ponds usually have a 3' - 4' high sloped bank to allow that portion to fill up during heavy rains and be "detained".

A "dry" detention pond, like the one shown in the photo, generally is in hidden areas of the subdivision and only hold a few inches of water that usually disappears during dry periods. However, each time there is a hard rain it will get replenished with new rainwater from the subdivision's drainage system.

Each year during one of the dry periods the parish will bush-hog dry detention ponds to keep trees and bushes from taking over. This is usually done when the irises are in their dormant period, so the theory from five years ago was that these dry detention ponds may be the perfect place to propagate species irises long-term without having to do any maintenance. You'd just let nature take its course!

Photo: Small clumps of irises can be seen with light green leaves out in the detention pond. They were planted last year. They had about 3" of standing water around them on Friday. They will likely need a couple more years before the clumps are large enough to thin out.

The plan for this workday was to thin out two clumps that were close to the pond bank.

The irises the two collected were still in their growth mode with new branches starting to come out from the center rhizome. Each clump that the irises were removed from were inspected during March when they were in bloom to confirm that they were the I. giganticaerulea iris that was planted there five years ago. The two clumps were last thinned out two years ago.

The second location is a transmission power line right of way where it was discovered five years ago that it had a small bog in its center. The bog was about 150' long and about 20' wide when the irises were first planted. After the first group of irises were thinned out a construction crew filled all but 50' of the bog. Luckily, most of the irises were removed from the area to be filled after the construction equipment showed up, but before they started work. Some irises were destroyed when there wasn't enough time to get them all out.

The 50' of bog that had been left was untouched for two years, so an investigation was launched this spring to see if any irises were still there. About 120 I. giganticaerulea iris were found happy and blooming!

The two volunteers took out all but about 30 irises so that the process can start all over again.

Photo: The surviving section of the bog is only about 10' wide, but it was still holding water after two weeks of no rain.

Photo: The irises were healthy and still in their growth mode.

Half of the 300 irises were planted, Saturday, June 20th, in the Bayou Sauvage wildlife refuge as a continuation of a project LICI has there. The other half were planted at the LICI iris holding area in New Orleans so that they can grow until they are used in projects this fall.

I. giganticaerulea Iris Rescue 6-12-2020

June 12, 2020 New Orleans, La.

The Louisiana Iris Conservation Initiative (LICI) successfully completed an iris rescue event on Friday, June 12, 2020. Over 2,000 I. giganticaerulea irises, which is a species of the Louisiana iris, were removed from a property located in an area west of New Orleans. The property is zoned and permitted for commercial development and is for sale.

This event was part of a multi-year ongoing LICI project to remove as many of the irises as possible from the property and to relocate them to area refuges and nature preserves. The irises that were collected on the June 12th event were in addition to the estimated total of 15,000 irises that have been removed from the property over the last two years.

The property owners have been very supportive of the effort to relocate their irises to locations where they will be permanently protected. They are kept updated on where the irises are planted in their final home.

The eight LICI volunteers worked hard on what turned out to be one of the most beautiful June mornings in recent years, with the temperature at the start of the event being in the mid 70's, with a steady breeze.

Most of the spots where the irises were dug up had a few inches of standing water. This was due to water being pushed in from Lake Pontchartrain because of tropical storm Cristobal's storm surge raising its level earlier in the week. Fortunately, this was 12" lower than the

high water mark the volunteers found at the site from a couple of days earlier. Iris are actually easier to dig if they are in a few inches of standing water because it loosens up the soil. Its the reason the volunteers were able to remove so many irises in the time that was available.

The irises were taken to LICI's new holding area in New Orleans where they were planted later in the day with the help of additional volunteers. They will be taken from the holding area this autumn and winter and planted in area refuges and nature preserves.

A big "Thank You!" goes out to the Louisiana Iris Conservation Initiative's volunteers that helped out at both locations to make this event a success!

Almost all of the out of state university groups that organize trips for students to come to New Orleans to volunteer have discontinued their plans for the next few months due to the COVID-19 pandemic. Having local volunteers from all walks of life help fill the gap will allow events like this to continue. Please feel free to email us if you would like to be notified of future LICI volunteer opportunities; licisaveirises@gmail.com

Photo: Volunteers for the morning dig (left to right); Steve and Mary Rooney, LICI summer intern Destiny Simon, Britt Aliperti, Chris Knapps, Andrew Hanna and George Wainright. Not shown is LICI board of directors member Gary Salathe.

The Louisiana Iris Conservation Initiative (LICI) installs a new iris holding area.

June 5, 2020 New Orleans, La.

On the morning of Friday, June 5th volunteers set up an iris holding area in the Lower Ninth Ward neighborhood of New Orleans. The lot is owned by Common Ground Relief, a local non-profit engaged in wetland's restoration projects using volunteers from around the country. The lot is next door to Common Ground Relief's wetland plant nursery. They have offered the site to LICI to propagate Louisiana irises for iris restoration projects.

Platforms were created by using cinder blocks and used wooden pallets. The raised platforms will make weeding the containers much easier. Each waterproof black container will act as a mini-swamp to keep the irises in water saturated soil.

The iris holding area is being set up to temporarily hold irises that will be dug up on LICI's iris rescue projects or from donations of irises from the public. The LICI locates wild species irises that are threatened with destruction from properties that are going to be developed. They then organize volunteers to go in and dig the irises up. The irises will then be planted in these containers at this holding area. Since many of the irises came from a habitat that is not the best they are stressed and digging them up further weakens the plants. By having them spend a few months in these containers filled with rich soil and being kept moist they we strengthen up before being moved into their permanent home in area refuges.

The irises shown being planted were dug up the day before in Mandeville, La. by other volunteers from a homeowner's yard. The homeowner had dug up a few wild irises from the swamp near his neighborhood years ago and now they needed to be thinned out. The Louisiana irises were identified as the I. giganticaerulea species iris when they bloomed in March. They will spend the next few months growing in the containers at the iris holding area until they are planted in the area's swamps and marshes. This batch of irises is slated to be used at the Town of Jean Lafitte's wetlands boardwalk and the boardwalk at the Joyce Wildlife refuge, which is located south of Ponchatoula, La.

The volunteers that set up LICI's iris holding area were residents of New Orleans from different walks of life that wanted to help out. If you would like to help on LICI's projects, email your contact information to licisaveirises@gmail.com.