After a few years growing dahlias, many gardeners invariably have questions concerning fungus. This usually starts with them simply asking, “how can I prevent my tubers from rotting”, realizing in most cases the reason for the decay is caused by some form of root rot. Often they see less innocuous forms of fungus on the surface of the tubers in … See entire post.
Note: There have been many excellent articles written detailing various procedures and methods of taking dahlia cuttings. This article is intended to help growers recognize and solve the most common problems encountered when taking cuttings.
Dahlias can be propagated from seeds, tubers, or cuttings. Seeds will produce varieties different from the parent plants, so propagation from seeds is used … See entire post.
Text and Photos © 1995-2000 by Barbara Jenke (Do not use for any commercial use without the permission of the author) Hot Springs, South Dakota
When I first started to grow dahlias in containers, I was frustrated because I could not find anything written in the general gardening magazines or books on this subject. The first years I grew only … See entire post.
Dahlia imperialis, also called the “tree dahlia,” bloomed recently at the Smithsonian. This dahlia is a separate species from those with which most people are familiar. Historically, in the Washington DC area, tree dahlias are killed by freezing before blooming. However, the horticulturists at the Smithsonian Gardens have successfully achieved blooms during two of the last three years. According to … See entire post.
Note: The Bulletins of the American Dahlia Society are full of excellent and timely information regarding successful growing of spectacular dalhias. This article, by Dr. Rick Peters, is a good example of that useful information. This article was published in the June, 2005, Bulletin. Decades of the ADS Bulletins are available for reading in the members-only portion of the website.… See entire post.
Last year we grew plants of one cultivar (M-FD) in four groups with different applications of fertilizer for each group which produced various results; some never made it through the soil, there were growth differences during the season and the weight of the roots when dug as reported in the June ADS Bulletin. Soon after planting we realized a mistake … See entire post.
We have been growing dahlias for over forty years, about 30 years ago we moved to our present location to have space around us and continued with the dahlia growing. Through the years we have met many respected dahlia growers and often the topic of discussion was fertilizing dahlias. The majority of growers recommended fertilizing with phosphorus and potash but … See entire post.
What is genome sequencing?
A laboratory process that determines the complete set of genes or genetic material in a cell or organism.
How does gene sequencing work?
Sequencing the dahlia genome would provide a road map of the locations and “composition” of all its genes. In lay terms it’s like having a road map for a trip from San Francisco … See entire post.
In 2016 Dr. Virginia Walbot of Stanford University and Kristine Albrecht of ADS started the ADS Genome Project based on Dr. Walbot’s inspiration. Dr. Walbot worked pro bono to see this project though Phase One.
Species dahlia seeds were collected in their native habitat in Mexico and grown by ADS volunteers and at Stanford University. Leaves from 15 species dahlias
From time to time, the ADS finds it appropriate to honor individuals who have made extraordinary contributions to the objectives and the successes of the ADS or to the dahlia. The criteria for the various awards are summarized as follows:
Awarded to individuals who have made significant, enduring, and/or extraordinary contributions to the ADS. This … See entire post.