House plant bugs in soil
Pests of indoor plants
These are the 15 most important PLAGUES that affect the plants of the Interior. You also have on other pages the description of the DISORDERS and DISEASES for this type of plants.
All Cochineal or Cocidoillas are characterized by a kind of protective shield of varied colors and consistencies, depending on the species in question.
These insects stick their beaks into the leaves and suck the sap, causing discolored, yellowish, deformed leaves and their subsequent fall. Part of the sap they drink is excreted as a bright sugary liquid (molasses) on which the Negrilla mushroom sits.
Remove the cochineals that you see with cotton impregnated with methyl alcohol and spray with insecticide. [More information here]
Aphid or aphids nail a sucking spout and absorb the sap; they deform leaves and buds, which roll or curl; also appears the fungus Negrilla (Fumaginas spp.), black, and ants. They collect the drops of molasses that excrete and protect them.
There are aphids of different colors: green, yellow, brown and black. Some have wings and others do not.
If the attack is weak, cut the damaged leaves and buds and shower them with soapy water. If not, insecticide. [More data]
3. White fly
They are small white flies.
They settle mainly on the underside of the leaves. If they shake, they fly away.
They produce damage when chopping the leaves. These become discolored and acquire a yellowish appearance. If the attack is intense, they are blinded and may even fall prematurely. Likewise, they are covered in molasses and this one, from Negrilla. [More data]
These small insects of a few millimeters bite the leaves, causing a silvery color or discolorations that then dry and fall. They attack the flowers and spoil them. They do not usually cause great damage. [More data]
5. Red spider
They are red spiders that can hardly be seen with the naked eye. They sit mostly on the underside (the back side of the leaves). If you look closely or with a magnifying glass, they look.
The red spider causes a yellowish appearance and yellow or brown points to the light. Then they dry out and fall. Sometimes fine cobwebs are seen on the underside.
They appear in a dry and hot environment so if you spray with water, you will discourage them. Use an acaricide, spraying well on the underside. [More data.]
Caterpillars of several species of butterflies that gnaw leaves. Some examples:
• Plusides (Autographa gamma, Chrysodeixis chalcites, Trichoplusia ni)
• Green donut (Spodoptera exigua)
Capture by hand all you see and if necessary, use insecticides.
7. Geranium butterfly (Cacyreus marshalli)
This plague is today the most damaging of the geraniums in the Iberian Peninsula.
Symptoms: stems with holes, withered flowers and leaves with bites.
The larvae measure about 2 cm. long and have a greenish color that becomes darker as they grow.
You must preventively treat your Geraniums and Gitanillas, at least once a month with the insecticides formulated for this pest.
If the plant is very attacked, it has practically no solution and must be discarded. If not, prune and remove all the affected stems (will take the orguitas inside) and apply the insecticide. Repeat the treatment every 15 days. [More data]
To repel them from the pots, make some rag bags and introduce naphthalene balls; place them in the pots. They also sell commercial repellents.
It is effective so that they do not scratch to cover the earth with gravel or Chinese.
So that they do not bite the plants, sprinkle their leaves with the juice of half a lemon diluted in two glasses of water. If not, spray with water alone at the time you are biting the plant for the cat to interpret it as a punishment for biting the plant. They take grass to cause vomiting and thus eliminate balls of hair that are ingested when sanitized.
Place turf, sage, thyme or parsley in a pot or buy trays of catnip to bite.
On the other hand, avoid having indoor plants that are toxic to cats, such as Poinsettia, Diefenbaquia, Azalea, Oleander, Holly, Cala, Caladium, Philodendron, Ivy, Hydrangea, Poinsettia, Potos, etc.
9. Minadores or submarine
The larvae of this small diptera originate sinuous galleries in the leaves. By translucence, the larvae can be seen inside.
To combat it, sprays with systemic insecticides must be carried out. Ejs .: Dipterex, Sumithión, Lannate, etc.
10. Green mosquito (Empoasca lybica)
They are small jumping greenish insects.
Its bites make the leaves yellow, a discoloration similar to that of Mites. The products used against Aphids are used for the Green Mosquito.
11. Snails and slugs
The symptoms in leaves are very similar to those caused by caterpillars, but they are distinguished because they leave a silvery trace of mucosa when crawling.
Fight: manual capture, traps with beer or metal-based baits.
Its presence in plants is generally due to the presence of aphids or pillbugs, from whose sugary excretions they feed. The plants do not do anything to them, but indirectly protect and favor the Aphids, acting as real “nannies” for them.
Eliminates Aphids; locate the anthills and apply an anti-ant product on it. [More data]
13. Soil worms
• White worms (Anoxia villosa). They can come in bulk substrates or if you take soil from the garden for the pots.
• Wireworms (Agriotes lineatus).
• Gray worms (Agrotis segetum). Roast the neck and fleshy underground parts.
Nematode Nodules in roots
Nematodes are microscopic worms about 0.2 millimeters that are introduced into the roots to feed. When their number is high, they seriously harm the plant and can kill it.
It is not easy to know if a plant is being attacked by Nematodes because the symptoms are the same as excess water, drought, lack of nutrients, etc., that is, pale green or yellow leaves and wilting.
When it comes to the genus Meloydogine (the most frequent), if the roots of the soil are extracted, some lumps or nodules are observed.
Start the affected plants in a pot and burn everything, including the substrate.
15. Woolly root bugs (Rhizoecus spp.)
In the cactus, woodlice can be detected in the roots. It is necessary to remove the plant from the pot to inspect the root ball and discover a white milkweed. Outwardly it manifests itself in that the plant does not grow. If some cactus see that it has not grown at the end of spring, check if it has cochineals in the roots.
The control consists of immersing the pot for 20 or 30 minutes in a water mixture with insecticides such as Actellic 50E or Folithion 50 EL.
To obtain more information referred to each specific species, consult the fiches of each species.