what is considered bulbous was: Re: Weedy Bulbs

Jan Agoston agoston.janos123@gmail.com
Wed, 23 May 2007 10:58:22 PDT
Dear Roger and All,

From my opinion you are a lucky guy, cause you have so many nice "weedy"
bulbs. For me Scilla siberica propagates well from seeds (more than
desired...). Viola sororia is also propagating well. (It has here thich
rhizomes, so can be a bulbous plant..)

My main question would be what is considered as a bulbous plant?
My opinion is bulbsous plant (sensu lato) can be plants wit the folowing
propagating parts: bulb, corm, tuber, rhizome, taproot, tuberous root
system, pseudobulb (I call it pseudocorm, cause it behaves like corms, but
it is over the soil level).

In Holland there are generally bulbs (tulips, daffodils, etc...) and there
are also plants somewhere sold as bulbs somewhere sold as perennials. PT and
APIH does not indicates which taxa should be considered bulbous. So does
anybody have some good definition for bulbs? (sensu lato or sensu stricto)

Thank you,

2007/5/23, totototo@telus.net <totototo@telus.net>:
> While cleaning up the garden, it struck me that some bulbous plants
> are very weedy, spreading overly freely by seed, offsets, or both.
> Different climates and different soils will have different weedy
> bulbs, but in my garden with its heavy, dampish soil and a cool
> Mediterranean climate, the worst offenders (which include a few
> surprises) are...
> Allium: A. christophii, A. karataviense, A. roseum.
> Brodiaea howellii This spreads like a mad thing by offsets. My form
> may be a sterile triploid. Another Brodiaea, possibly B. coronaria,
> has similar propensities to seek lebensraum.
> Camassia leichtlinii, both ssp. leichtlinii (the uncommon creamy-
> white type) and ssp. suksdorfii (violet-blue), also a commercial form
> I've lost the name of.
> Chionodoxa has a habit of turning up as single seedlings in the
> oddest places. As long as I round them up and put them in their
> corral with other small blue bulbs, they're fine, but ignore them and
> my garden would gradually turn into a sea of sapphire blue.
> Eranthis hyemalis is a prolific self-sower, but so welcome that I am
> reluctant to designate it as a weed.
> Hyancinthoides hispanica, H. non-scripta (what is the currently
> accepted generic name for these?)
> Muscari aucheri 'Blue Boy'; M. armeniacum 'Valerie Finnis', to my
> despair, tried to set seed this year, but I have removed the unripe
> capsules.
> Nothoscordum inodorum
> Ornithogalum umbellatum
> Oxalis oregana, both pink- & white-flowered forms, though they are
> not bulbs and perhaps not strictly grist for the PBS mill. The white-
> flowered form in is a true thug, in leafy soil spreading far and wide
> by thin rhizomes that look like nothing so much as pink spaghetti.
> Trillium rivale - the vigorous form that may, or may not, be a hybrid
> with T. ovatum and may or may not properly be called 'Del Norte'. [I
> am still stirring that pot offline, but no definite results can be
> announced as yet.] The difficulty is that every seed germinates!
> Tulipa sprengeri. I encourage this, however, scattering the seed; its
> bright red is very welcome in May.
> --
> Rodger Whitlock
> Victoria, British Columbia, Canada
> Maritime Zone 8, a cool Mediterranean climate
> on beautiful Vancouver Island
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