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Drosera nidiformis. These plants are in a 5 cm pot. |
Drosera nidiformis is found in tropical southern Africa. It was
known as Drosera sp. "Magaliesburg". The small plant makes a good
addition to any terrarium but is difficult to maintain long-term.
Drosera nidiformis isn't very picky about soil. It grows
best in the standard 1:1 peat:sand "CP mix".
The plant is very susceptible to a fungus that causes the plant to turn
all red and loose it's dew. A systemic fungicide such as Clearies 3336
can be effective unless the fungus becomes resistant from spraying too
often. Do not use fungicide on a regular basis as that results in selecting
for resistance. If this happens, use dusting sulfur.
Sow seeds of Drosera nidiformis on the surface of your
medium of choice. Finely chopped live sphagnum moss on CP mix works very
well but the moss can overgrow the plants. Finely chopped dead sphagnum
or sand over CP mix also works well.
What you do next depends on what works best for you. Everyone has their
own preferred routine. I put pots with seeds in plastic zip-lock bags
under but not too close to fluorescent lights. You could also use an aquarium in a greenhouse. The purpose of the plastic bag is to maintain very high humidity and to keep out fungus gnats. Fungus gnat larvae will eat the seedlings. A temperature between 20°C
to 25°C (70°F to 80°F) works best. The seeds should germinate in a few weeks. When the new plants have a few true leaves, remove
the pots from the plastic bags and put them in a bright terrarium or greenhouse. The seedlings may be a little slow growing at first. Have patience.
Once the plants are large enough you can try feeding them small insects
or get some dried blood worms at a pet shop. The dried blood worms can
be dipped in water and placed on the dewy leaves--don't feed a plant that
isn't dewy. If the food gets moldy, use less next time. A dab of 70% isopropanol
(rubbing alcohol) from a small paint brush will kill the fungus.
Drosera nidiformis tends to live a year or so. When it
blooms, save the seeds to grow more. If you have lots of seed, send the
extra in to the seed bank.
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