Crinums, Onion Plants
Dwarf Onion suitability for aquariums
I've bought a number of packs of assorted aquarium bulbs over the last
year or so, mostly because I am a big fan of Aponogetons.
<As am I; provided you accept them as plants that may need replacing
after a year or two, they're good value.>
The packs also included Lily Bulbs (listed as Nymphaea, which I can't
seem to get to sprout) as well as Onions (listed as Crinum Thaianum).
I'm fairly certain now that these are Dwarf Onions (Zephyranthes
<On the basis of leaf shape? Zephyranthes tend to have much thinner
leaves than Crinum, and Crinum are much, much bigger plants with
onion-like and onion-sized bulbs once mature.>
which makes sense given the Endangered status of Crinum Thaianum.
<Not really. The plant may well be endangered in the wild, but still
farmed extensively in Holland and elsewhere. Do bear in mind that many
cheap, common fish are extinct in the wild -- the Red Tail Black Shark
They have worked well for about 6 or 7 months now, but seem to be
prone to leaves occasionally becoming clear and needing to be snipped.
<When leaves go clear it's often a sign the plant is stressed and the
leaf has died.>
I'm finding conflicting sources saying that these will survive
underwater as well as those that say they will die sooner or later. Will
these do well long term in an aquarium?
<Probably not; by all accounts Zephyranthes is a bog plant that does
best in well-drained soil that doesn't dry out, much like irises and
things like that. Pretty much any bog plant will survive some months
underwater, but not always (indeed, rarely) indefinitely. Of course you
may well choose to treat them as disposable plants, and replace as/when
Thank you for your help with this.
<Most welcome, Neale.>