Cold Hardy Lilies: Tips On Growing Lilies In Zone 5
In this article we will share with you some tips on growing cold hardy lilies in zone 5. These are the best time to grow these plants and they can be grown year round if kept well cared for. You may want to read our other articles on how to grow lilies in zones 4, 3, 2 & 1.
What Are Cold Hardy Lilies?
A cold hardy or frost tender perennial flower is one that does not require much water during its life cycle. They need very little light and are able to survive extreme cold temperatures. Some examples include the dwarf white lily (Lilium longiflorum), the red poppy (Papaver somniferum) and the yellow buttercup (Ceratonia siliqua). All of them can withstand freezing temperatures down to -40 degrees Fahrenheit (-30 Celsius).
How To Grow Cold Hardy Lilies In Zone 5?
There are many varieties of cold hardy lilies available today. Some are easy to grow, while others take a bit more effort. If you’re looking for something easy to grow, then try the dwarf white lily (Lilium longiflorum) which grows in most areas of the United States except Hawaii and Alaska. It can tolerate temperatures from -10 to -20 degrees Fahrenheit without any problem. If you want something a bit more hardy, then try the Asiatic hybrid lily (Lilium x hansonii), which grows in colder weather all over North America except for Hawaii and parts of Arizona. The Asiatic hybrid lily is able to survive temperatures between 0 and -20 degrees Fahrenheit.
It is extremely important that you plant the bulbs correctly. Otherwise, the bulbs will rot and you will need to get new ones. If you’re not sure on how to plant them correctly, consult an expert or read our detailed guide on how to plant lily bulbs.
You should plant the bulbs 3 to 4 inches under soil, with the pointy end up. The depth of the hole should be at least three times the height of the bulb. Add a few shovelfuls of gravel at the bottom to prevent water from collecting and rotting the bulbs.
Plant the bulbs when the soil temperature is at least 40 degrees Fahrenheit. This usually occurs in the month of October. After the first frost, you can begin to plant the bulbs.
Dig a hole at least three times the size of the bulb and plant it just below the surface of the soil.
Choose a location that receives full sun, but is also protected from strong winds.
Sources & references used in this article:
Effects of supplementary lighting on flowering, plant quality and nutrient requirements of lily ‘Laura Lee’during winter forcing by J Treder – Scientia horticulturae, 2003 – Elsevier
Lily industry and research, and native Lilium species in Korea by Y Kim – International Symposium on the Genus Lilium 414, 1994 – actahort.org
Lilies of Japan by M Shimizu – Seibundo Shinko-sha, Tokyo (in Japanese), 1971 – pdfs.semanticscholar.org
Water lily plant named’Purple Fantasy’ by B McLane – US Patent App. 13/999,493, 2015 – Google Patents
Benzyladenine and gibberellins improve postharvest quality of cut Asiatic and Oriental lilies by SS Han – HortScience, 2001 – journals.ashs.org