Hostas,(a.k.a Plantain Lily) are native to China, Japan and Korea, they were introduced into the United States in the early 1800's. The name Hosta is in honor of the Austrian botanist Nicholas Thomas Host (1771-1834).
These shade loving plants are one of the most popular perennials. They are very easy, adaptable, and relatively fool-proof. They have a very wide growing range, Zone 3 to Zone 9. Hostas do need a brief period of cold weather to go dormant. Insufficient Winter chill and dry air, such as in western deserts, are chief limiting factors for folks out there.
Like I said earlier, Hostas are considered shade-tolerant plants, but most do not thrive if grown in deep shade. Hostas grow best in an exposure with morning sun and afternoon shade and will change color or fade if they are in too much sun. They grow by underground stems called rhizomes. They prefer well-drained,slightly acidic soils,and will not tolerate soggy conditions, especially during the Winter months. They do like to be kept moist however, their native habitat is as an understory plant. A good layer of mulch will keep them happy and some supplemental irrigation in dry weather, especially if growing under trees which take up so much of the soil moisture.
These little beauties are mainly grown for their beautiful foliage. Hosta leaves come in many shapes, colors, sizes and textures. The leaves grow as clump-like mounds in colors ranging from yellow-green to dark green to blue-green. Variegated varieties are also very common. The variegation can come in white, cream, or yellow and can occur on the edges of the leaves, in the centers, or streaked throughout the leaf. Even with all this great color,there is another side to growing Hostas, their flowers.
There are a few pests of Hostas, but for the most part, they can be controlled.
Slugs and snails are night time foragers and are the most common pest of Hostas. They eat small round holes in the leaves. Look for silvery slime trails in garden beds to determine if these pests are present. Thin-leafed hostas and those with leaves growing close to the ground are most susceptible to injury. Chemical slug and snail pellets and baits that contain metaldehyde are widely available commercially, however label directions must be followed carefully. I've heard of several cases where these poisoned and almost killed family pets. Beer traps are widely used, albeit with only moderate success. Place a small shallow container, such as a deep jar lid, level with the soil and fill with beer. Slugs are attracted to it, crawl in, and drown. I don't know if they have a preference of beer, I would start with a cheap one and work your way up until you find one they really like.
Other controls include handpicking, Copper plates and deterrents like a layer of diatomaceous earth or crushed eggshells spread underneath the plants. Though these last few are also only moderately successful.
Deer can also eat all your Hosta plants in one evening, leaving just the stalks standing.
As far as diseases are concerned, Hosta anthracnose can cause large whitish spots with brown edges to form on leaves and stalks. Remove the damaged leaves and discard in the trash, not your compost bin.
When it comes to what to choose from, there is not near enough room on this blog to list them all. There are some estimates that list 7,400 cultivars and more being introduced every year.
They all have names too. Some are very formal sounding like: ‘Regal Splendor’, 'Royal Standard' and 'Elegans'.
Some give you an idea of their color: 'Gold Standard','Blue Cadet', 'Sun Power' and 'Guacamole'.
Then there are the ones that, well, I will let you decide what they were named for: 'Love Pat', 'All That Jazz', 'Blazing Saddles' 'Captain Kirk' and 'Striptease'.
Interestingly enough, and I DON'T recommend this, unless you know what you are doing, Hostas are edible by humans. They are called "urui" in Japan where they are commonly consumed. The parts eaten and the manner of preparation differ depending on the species; in some cases it is the shoots, others the leaf petiole, others the whole leaf. Younger parts are generally preferred as being more tender than older parts. The flowers are also edible.
Just like almost all other plants, Hostas have their own society. The American Hosta Society can be found at this link: The American Hosta Society
I will leave you with this bit of wisdom from a man that calls himself "The Hosta Guy" (catchy name). One final word of caution: Many "casual" Hosta users thought they could stop whenever they wanted. What begins as an innocent interest can quickly develop into a full-blown addiction. If you routinely tell your spouse you paid less than you really did for a new Hosta introduction, or brag about how many Hosta cultivars you have growing in your garden, you may need help.
Happy Growing!
Darren
