PESTS AND DISEASES OF CLIVIA:
These are tiny little green, sometimes black insects, usually seen in small colonies sucking the sap of new growths and flower buds. They are normally tended to by ants. Although they cause minimal damage themselves, they do spread viruses. To eliminate them, use Chlorpyrifos, spraying the whole plant. If you are the organic type, you can collect some Lady Bugs in the garden and place them on the infected plant, the Lady bugs will devour many aphids daily.
2. Mealy Bugs
They are small white/light grey woolly looking insects, normally found on new growths, also spreading virus. Getting rid of them, use Chlorpyrifos, Malasol, Confidor or Dursban, spraying they whole plant. Another method is to mix Alcohol and water, and then spraying the whole plant, these little insects also hide beneath the potting mix, so it is important to drench the mix or even dunk the whole plant, pot and all in the alcohol/water mix and then let it drain and dry normally.
3. Lily Borer
These are black and yellow caterpillars, which feeds on leaves and tunnels into the leaves, berries, stalks and bulbs of various lilies and amaryllids. I have had great success using Garden Ripcord, spraying all the plants. I have also experimented with pots of Marigolds amongst my Clivias, Amyrillis and Crinums and it does seem to deter them.
4 .Red Spider Mite
Tiny reddish-brown spiders which weave a web on the underside of leaves. Cause yellowing and bronzing of the leaves. They can be controlled by spraying spidermitespray or Red spidercide
5 .Slugs and Snails
Every gardener knows what these look like, they feed on new growths, use Snailbait to get rid of them. Placing a flat dish filled with beer, will draw them out at night and they will drown. I have also heard that taking a cabbage leaf and spreading lard onto it will draw them out at night, only thing is that you will have to go out at night and collect them.
6. Fungal and bacterial diseases
Various pathogenic organisms externally present on the seed, plants or in the soil. They are the causes of diseases like seed rot, root rot, damping-off, rust, leaf spots and bacterial rot.
Copper oxychloride (Virikop) apply as a drench to soils – 1.5l/m² (for bacteria and fungus) Furalaxyl (Fongarid) apply as a drench to seedlings and cuttings in pots or beds. (for fungus) Zineb (Zineb) apply as directed. Controls various leaf spots. (for fungus)
Viruses are microscopic organisms consisting out of pieces of nucleoprotein, which have to multiply in living tissue. Virus particles can be transmitted by seed, infected gardening equipment, soil and various insects
No treatment available Suspected plants/propagating material should be destroyed.