Hardy bulbs are a
great asset to the garden, for they provide some of the earliest and
latest blooms, begining with snowdrops and winter aconites and finishing
with autumn cyclamens and autumn crocuses. It's a
fact of life: to enjoy the glorious bulb flowers that bloom in
spring -- such as tulips, daffodils, hyacinths, crocus and others -- you
must plant them in the fall. That's the hard fact. The fun fact is that
nothing is easier to grow or more colorfully rewarding than flower bulbs.
Even the most unskilled gardener can create a breathtaking and beautiful
spring garden with bulbs. Spring-flowering bulbs
must be planted in the fall because they require a sustained
"dormant" period of cold temperatures to stimulate root development.
Groups of bulbs make a much nicer
show than individual "soldiers marching single file." To create
greater color impact in the garden, plant clusters of same-color flowers
together in blocks or "bouquets." Visually, you get more "bang for the
buck." One trick: try positioning similar bulbs in atriangular planting
pattern in the garden, with the point of the triangle towards the front and
the long leg towards the back. The result: it will look as if you planted
more flowers than you did. Generally, larger bulbs should be planted 3 to 6
inches apart, smaller bulbs 1 to 2 inches apart.
After tulip
flowers have faded, "dead-head" them by clipping off the faded
blooms so that they won't go to seed. Narcissi (daffodils) do not require
dead-heading,just leave as is. The main requirement for bulb flowers in the
post-bloom period is to leave the leaves alone so the plant can put its
energy into "recharging" its bulb for next spring's performance. This
"energy charge" is gained through photosynthesis as the plant uses the
sun's energy to turn basic elements such as oxygen, nitrogen, phosphorous
and potassium into food. This food is stored in the bulb's "scales," the
white fleshy part of the bulb, for use next spring. It is necessary to leave the green foliage exposed to the
sun until it turns brown or six weeks have elapsed since blooming. Fight
the urge to trim back or constrain the leaves during their die-back phase
after looming. Don't bunch, tie, braid or cut bulb plant leaves during this
period. Dealing with the fading foliage is basically one of those things
that lovers of spring bulbs must deal with. The only management tip is
camouflage. As far as size of bulb is
concerned: It is true, however, that, as a general rule, the bigger
the tulip bulb the bigger the flower. But bigger does not necessarily mean
better. The bulbs of a species tulip such as Tulipa tarda for example would
appear quite tiny beside, say, a large Darwin Hybrid bulb such as
"Apeldoorn." But these small species tulips are some of the most delicate
and lovely bulb flowers you can grow. They're quite hardy as well. Tulip
bulbs are sold by caliber or size. Within any particular type or variety of
tulip, the larger bulbs will fetch a higher price than the smaller ones.
For big showy displays, the larger caliber bulbs are certainly worth the
price. However, some excellent bargains are to be had by buying lots of
smaller caliber bulbs for brightening up a marginal spot in the spring
yard.
Tulips are sun as well as
shade lovers. But when planting your tulips this fall, don't be fooled by
the patterns of sun and shade in the fall garden! Remember that come
spring, when tulips bloom, all the deciduous, non-evergreen trees in your
yard will be beautifully leafless. There's a lot of sun in a spring garden!
What is a bulb?
A
flower bulb is really an underground storehouse and flower factory.
Within the bulb is just about everything the plant will need to sprout and
flower at the appropriate time. Split a bulb in half and you will see this
clearly.
In the basal center portion of the
bulb are the leaves cradling a baby bud. (In many species, this bud already
has the appearance of a flower while still in the bulb!) Surrounding the
bud is a white, meaty substance called the scales. In true bulbs, it is
these scales which contain all the food the bulb will need to flower and
thrive. Anchoring the scales and the floral stalk which holds the bud is
the basal plate. This plate at the bottom of the bulb also holds the roots
of the plant. The entire package is protected by a thin outer skin called
the tunic.
All this remarkable organism
needs from humans is to be placed in the ground at the appropriate
season of the year, given a liberal drink of water and then left alone. The
bulb does the rest!
The Difference Between Bulbs,
Corms, Tubers, Roots
Technically speaking, many popular "bulb" flowers are not
produced from true bulbs at all. Crocuses and gladioli, for example, are
really corms, while such favorites as dahlias and begonias are really
tubers. The differences between bulbs and
corms are slight, and indeed the two look very similar. The main
distinguishing trait is the method of storing food. In corms, most of the
food is stored in an enlarged basal plate rather than the meaty scales,
which in corms are much smaller. Corms generally tend to be flatter in
shape than round, true bulbs.
Tubers and
roots are easily distinguished from bulbs and corms. They have no
protective tunic and are really just enlarged stem tissue. They come in a
variety of shapes, from cylindrical, to flat, to just about any combination
you can imagine. Many come in clusters.
Generally, however, you are safe using the term "bulb."
Bulb has commonly come to mean any plant which has an underground food
storage capacity. Tulips prefer a sandy to
medium loamy soil with sharp underdrainage but they will grow and bloom (
for a few years) in almost any soil that is not water logged.
Digging the Dirt on Bulbs Most
spring-flowering Dutch bulbs will thrive in either full or partial
sun, but do just fine in almost any location that offers good drainage.
Bulbs will rot in standing water so avoid areas prone to flooding, such as
the bottom of hills or under drainpipes.
After choosing the site: Dig
either a trench for a bed planting, or individual holes for
individual bulbs or small cluster of bulbs. (Note that a cluster of flowers
is more striking to the eye than a lone bloomer.)
To determine how deep to plant, consider the caliber or
size of the bulb. Large bulbs (2 inches or more) are usually planted about
8 inches deep; smaller-size bulbs (1 inch) are planted 5 inches deep.
Loosen the soil with a rake to aerate it
and remove any weeds and small stones. Mix in a bit of peat moss to improve
soil drainage. Place -- do not push -- bulbs firmly in the soil with the
pointed side up. Space large bulbs 3-10
inches apart and small bulbs 1-2 inches apart. (If you're not sure
which end is right-side-up, don't worry. Upside-down bulbs usually come up
anyway!) Cover the bulbs with soil and water
generously. Add 2-3 inches of mulch, pine bark is fine, on top of
the garden bed. This will provide added protection from the cold and keeps
the soil from drying out.

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