What Is Bulb Chipping – Tips On How To Chip A Flower Bulb


What is bulb chipping and how does it differ from other forms of propagation? Keep reading to find out more about bulb chipping propagation.

Division and Bulb Chipping Propagation

Many flowering bulbs multiply easily in the ground by forming bulblets around the base of the parent bulb. These offsets are easily recognizable when new shoots of greenery appear beside the mother plant. Daffodils and crocuses are easily propagated by the removal and replanting of these offsets.

Plants such as lilies produce bulbils in the leaf axils. These bulbils can be easily removed when ripe and planted in a pot until they reach a size suitable to survive outdoors. Scaling is another method that involves the removal of scales (layers) from the parent and replanting.

Other bulbs are not so easy and, as luck would have it, are usually the more expensive bulbs offered at your garden store. Learning how to chip a flower bulb can allow you to reproduce your favorite flowering bulbs without costing you a great deal of money. For purposes of discussion and demonstration, we will use the lovely Amaryllis or Hippeastrum bulbs that are so common (and expensive) in the fall for winter forcing. The large bulb is perfect for bulb chipping. Propagation takes time, but the reward is great.

What is Bulb Chipping?

In answer to the question what is bulb chipping, it is important to understand the structure of the bulb. Those fleshy leaves comprising the bulb are called scales, and bulb chipping propagation involves separating clusters of those leaves to encourage the growth of bulblets.

Which bulbs can be chipped? Almost any, but bulb chipping propagation is time consuming and it can take several years before the chips become flower producing plants, so it is generally used only for the rarest or most expensive types of bulbs.

When learning how to chip a flower bulb, cleanliness is of the utmost importance or you’ll be damaging the integrity of the bulb and, in doing so, leave it open to infection. Wear gloves. Some bulbs secretions can irritate the skin.

How to Chip a Flower Bulb

Once your Amaryllis has stopped blooming and the leaves have died back, remove it from the pot and lightly brush all potting medium away. Inspect the bulb for soft spots or other damage. These spots are susceptible to decay and should not be used. Clip off all root growth to the basal plate — the flat bottom of the bulb. Do not damage the basal plate. Using a sharp knife that has been sterilized (in methylated spirits), cut off all brown leaf growth and a small portion of the bulb tip (the pointy part of the bulb).

To chip the flower bulb, cut through the basal plate and divide the bulb in half from plate to tip. Divide those two portions in half again. Continue dividing until you have eight portions. Larger bulbs can be chipped into sixteen pieces as long as each chip has a portion of basal plate attached. Soak each of these chips in a fungicide solution for fifteen minutes. Allow the treated chips to drain.

Store your chips in plastic bags with four to six pieces per bag. A growing medium of ten parts vermiculite to one part water is ideal for bulb chipping propagation. The chips should be covered with the medium. Blow air into the bag as an air supply and tightly tie off the bag. Store the bags in a dark place with a temperature of 20°C (68°F) for about twelve weeks, checking weekly and only opening the bag to remove any rotting chips. Add air each time the bag is opened.

The scales will eventually separate and bulblets should form between them near the basal plate. At this point, plant the chips plate down in a light compost, covering the bulblets with about a half inch (1 cm) of medium. The uncovered, upper portions of the scales will rot away as the bulblets grow.

It can take several years for these bulblets to grow large enough to produce flowers, and this is a factor when deciding which bulbs can be chipped, but your long awaited results will be numerous replicas of the parent plant which you will enjoy for years to come.


Fall Planting

Plant cloves in mid-autumn in a sunny location with rich, well-drained soil. Set cloves root side down 4-6" apart in rows 1-1/2 to 2' apart, and cover with 1-2" of fine soil. In the North, put down 6" of mulch for winter protection. Garlic may begin growth late in fall or early in spring.

Spring Planting

Plant cloves as early in spring as soil can be worked, about the same time as onion sets. Spring planted garlic should be put in the ground in the same manner as in the fall.


All About The Poison Bulb

Purplish tendrils extend from amidst the white petals of the flowers. Source: laurent7624

Crinum lily’s origins are throughout Asia, Australia, and the Pacific and Indian Ocean islands. These subtropical plants can tolerate cooler climates, but thrive in warmth. This likely explains why they’re so popular in parts of southern California!

The flowers are reminiscent of stars. Each long, tubular flower has six petals that extend out to the sides. Most of the time they are white in hue, but they may develop reddish stripes or a purplish tint. These flowers are massive, growing to sizes of 4″ long and wide. Long filament-like stamens in a reddish hue protrude from the flower’s center.

Crinum flowers grow on a long scape which extends high above the long, sword-like leaves. Up to 25 or 30 flowers can form on each scape, making for a huge cluster of brightness amongst your foliage!

Leaves can reach four feet in length and up to five inches wide near their base. Generally they remain narrow in comparison to their length. These develop in a cluster at the base of the plant, and it’s from this dense foliage that the flower scapes erupt.

As for the bulb of the poison bulb plant, it’s as massive as all other aspects of this lush subtropical. A typical bulb can be 10-25 pounds! They take up a massive amount of space under the ground. From the bulb’s tapered neck is where the foliage grows.


Dates & Price

Practice the "chipping" method of asexual bulb propagation on Galanthus and Narcissus bulbs. The process involves cutting the bulbs into quarters and then placing them in bags of moist vermiculite. You will also learn how to scoop the basal plate of hyacinths to form new bulbils, as well as divide lily scales to generate the formation of more lily bulbils. Take the chipped, scaled, and scooped bulbs home and the pieces should produce bulbils, thus generating more bulbs. Once you master the technique, you can increase your bulb inventory, especially on expensive bulbs!

Take home the bulbils you produce in class as well as a sharp grafting knife.

Instructor

Where

Please remember that many courses are extremely popular and will sell out quickly. Register now to begin your journey in lifelong learning at Longwood Gardens.


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