Native Plants
Q. Who is Mr. Smarty Plants?
A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Saturday - May 02, 2009
From: Phenix City, AL
Region: Southeast
Topic: Non-Natives, Herbs/Forbs
Title: Drooping leaves on iris in Phenix City, AL
Answered by: Barbara Medford
QUESTION:
I had a bed FULL of iris rhizomes so I thinned them out and made two beds. They flowered perfectly but some of the flower stalks and some of the leaves began drooping over. The flowering is over. The plants are all green, but some of the leaves are "perky" but some are still "droopy". What can I do about this? Can I cut the droopy leaves?ANSWER:
If we may use some material from previous questions, it will save some time:
Let's talk first about native or non-hybridized iris. There are 26 irises native to North America in our Native Plant Database. Of these, seven were shown to be native to Alabama. These are: Iris brevicaulis (zigzag iris), Iris cristata (dwarf crested iris), Iris fulva (copper iris), Iris hexagona (Dixie iris), Iris verna (dwarf violet iris), Iris virginica (Virginia iris) and Iris virginica var. shrevei (Shreve's iris).
But, perhaps you are growing the Iris germanica, bearded iris. This USDA Plant Profile link refers to the I. germanica as "introduced"; that is, not native to North America. The same map shows the Iris germanica NOT growing in Alabama, but we think that information is a little out of date. This site from Floridata will give you more information on the culture of I. germanica. It apparently began as a natural hybrid between I. pallida and I.variegata. Iris germanica is thought to be native to Southern Europe and the Meditteranean, and other species from Europe and Asia have been brought into the breeding, but it has become established all over the temperate world and can be found on road shoulders and old home sites throughout much of the United States and Europe. There are literally thousands of different irises, many of them with commercial cultivar names.
Now, we begin to see the value of using plants native not only to North America but to the area in which they are being grown, as promoted by the Lady Bird Johnson Wildflower Center. When you are dealing with a hybridized and/or non-native plant, you have no idea what characteristics it has bred into it, nor of the ideal way to grow it. With plants native to the area in which you are gardening, you don't have to make as many adjustments in water, fertilizer or even soil content, because you likely already have good conditions for the native plant to flourish.
We found a National Gardening Association website All About Iris that can probably give you better information than we can.We are assuming you have Iris germanica, or bearded iris. There has been so much hybridization of most of the irises that nativity would be almost impossible to determine. It is a very popular old garden flower and you should enjoy it. They are pretty tough and forgiving as we know from personal experience. One thing we would emphasize is no mulch. That rhizome needs some exposure to air, and will rot if it is completely covered. Organic compost in the ground, as it decomposes, will help keep the rhizome warm, but you don't want it to rot. We always made it a point to cut off a blooming stalk as soon as it had finished all the buds on the stalk, right down to the ground. Any leaves that are actually browned can come off, too but we don't think a little drooping is anything to be concerned about.
More Non-Natives Questions
Care for non-native tropical Hibiscus rosa sinensis in Clinton Township MI
October 18, 2010 - Do I have to bring a painted lady hibiscus tree in for the winter? We planted it in the ground and it did great this summer, but I do not know if we have to put it in a pot and bring it in for the wi...
view the full question and answer
Best for Austin-non-native loquat or kumquat?
May 04, 2010 - I was wondering which tree is suited better in the Austin,TX, area, the Loquat or the Kumquat, do they lose their leaves in the winter and do they bear fruits?
view the full question and answer
Does non-native mimosa tree have a tap root from Lubbock TX?
July 05, 2010 - Does a mimosa tree have a tap root? I would like to plant one next to a concrete driveway to help shade the garage and do not want to cause damage to the driveway in the future. Thank you in advance...
view the full question and answer
Dwarf Form of Japanese Blueberry?
March 17, 2016 - Is there a dwarf variety of Japanese blueberry that will grow in my area? Or is it so non-native that it's not in your category?
view the full question and answer
Late blooming Esperanza in St. Augustine FL
April 21, 2011 - I bought an Esperanza at a plant expo- I was told it was a Florida native Allamanda. It took me two years to figure out what I had. Mine grows 8 ft. tall and is huge! But it doesn't bloom until alm...
view the full question and answer
| Support the Wildflower Center by Donating Online or Becoming a Member today. |