I have a dark-leaved rex begonia - a pretty vigorous grower - that is crowding itself out of the pot I put it in last year. It has 3 distinct crowns, all along the outside rim of the pot. Is it possible to separate the crowns and replant them in individual pots? Is there a special technique or special care required? Of the 4 that I've had, this one is the most care-free and I would hate to damage it through ignorance. Many thanks for any advice.
Should I try to evenly divide the roots so that all of the clumps have some roots? Haven't taken it out of the pot yet so I'm not sure about the size of the root system. And, if there are enough roots for each division, should I still plant in perlite or go right to potting soil?
Thanks for your advice!
It is a lot easier to get it to root in summer than winter but it can be done at any time of year if you have the right conditions - light, warmth, and humidity are very important. Perlite helps keep the moisture up without keeping too much water around the cut which can cause rot.
Here are some trays I have going in the basement with no humidity domes. I water them almost every day with drainage holes punched in the bottom of the trays.
Nice collection there.
I normally run a cool (55 to 60 deg) little greenhouse in the winter but I use heat mats as well for rooting other cuttings as well as fluorescent lights. It does get warmer during the day if the sun is out. Would this be acceptable, assuming that I do have some roots to start with?
One more pan (I have cheap aluminum pans filled with either perlite or potting mix and then stick in babies of earth stars and keep watered. Even if they dry out they don't dry up and blow away (right away so do keep them watered).
The top left corner I believe is Elaine and the black ones may be Black Mystic..
Butch - I did forge ahead and divided my rex. I ended up with 4 crowns, all potted separately, all with roots of varying degrees. The one division with the smallest number of roots is really drooping even though the soil is moist. Should I cut off some of the leaves so that the water demand isn't so great for the size of the root ball? The others are doing great so far. And I did move the 3 smaller divisions indoors with a more constant temp and indirect light.
Thanks for the info - it really enabled me.
killd - don't worry about hijacking - I (carried away) do it myself. Those are some beautiful pics so they deserve attention.
I did put a plastic bowl over the drooping begonia division yesterday and cut off some of the older leaves and it's perked up quite a bit. Thanks again.