Website/Catalog  (1937)  Page(s) [3].  
 
This Year's Cottage Gardens Introductions
It is our pleasure to introduce this year five Peony seedlings originated by Mr. Abraham Nieuwenhuizen.
Mr. Nieuwenhuizen was one of the leading Peony growers in the Netherlands and when he came to America, in 1921, he left many of his seedlings in the care of relatives. After joining the Cottage Gardens organization in 1928, we induced Mr. Nieuwenhuizen to bring his best seedlings over to this country for our observation and we believe that the five varieties we are introducing this year will prove of great interest to Peony Fanciers, Professional Growers, and amateur gardeners.
Rio Grande—Stem three feet tall, straight and erect. Foliage dark green, the flower is very double, intermingled with a few stamens, hiding between the large petals. Color a uniform and shiny dark red which does not turn blue. Midseason...$25.00 Each

Magazine  (Sep 1935)  Page(s) 6.  
 
Five New Peonies Introduced by The Cottage Gardens
The following five new peonies originated by Abraham Nieuwenhuizen are being offered to the public by The Cottage Gardens Company of Lansing, Michigan.
Rio Grande (Nieuwenhuizen, 1935). New. Double. Midseason. Red. The stems of this peony are three feet tall, straight and erect. The foliage is dark green, the flower is very double with intermingled stamens hiding between the large petals. Its color is a uniform shiny dark red which does not turn blue.