Hello everyone today we are going to do something completely different that is to look at what causes most damage to bonsai trees the pests involved and how to eradicate them . Today I’m looking at Vine Weevils and particularly how to deal with them and eradicate them so that they don’t damage my bonsai trees Vine weevils cause a lot of damage there are two stages or three stages in its lifecycle the adult the eggs and then the grubs the adults attack and eat the leaves from autumn through the spring and from spring through to autumn is the grubs in the soil which are found very near to the roots. They eat the roots and the sign of Weevil attack is wilting leaves and dying of the tree and the best way to defend against Vine Weevil are various remedies available some chemical some organic and we are looking at an organic remedy and I am talking here of Nematodes, nematodes are microscopic creatures and there are hundreds of thousands of species apparently five out of every six animals are nematodes these microscopic organisms would enter into the stream of the Vine weevils through an opening such as mouth and then start to eat up Vine Weevils from inside and as they eat they breed and once the food source runs out they start to die.
This particular strain only attacks and feeds on Vine weevils and nothing else. it is quite safe to use so I’m told but I don’t take any chances and I am using kitchen washing up plastic gloves I have been treating my bonsai trees with Nematodes for quite some times and that takes care of the Vine Weevils and toda I’m going to show you the process is quite simple, I will show you the making of it and then how its applied but the detail I will leave out should you decide to do the same thing the instructions on the pack and you can buy these, you can google, google it and plenty of suppliers and the only drawback is once they are sold out they are sold out. They are living organisms they’ve got a shelf life. they have to be kept in the fridge refrigerated until they are used and they certainly must be used up before it says on the packet use before date The adult Vine Weevils are about nine millimeters long or 3/16 of an inch and our long black creatures with yellow dirty markings on the back.
The Vine Weevil grubs are C shaped they’re plump a little bit fat and are about ten millimeters long and 5/16 of an inch and they’re found near the roots, as they feed on the roots and you know what happens the sign that they’re at at it is the welting of the leaves and eventually the tree dying. I treat my bonsai trees with nematodes twice in the spring / summer and then twice in autumn/spring. That way it makes absolutely certain that there aren’t any off them hanging around as there are such a lot of trees, I have been very careful not to miss any pot and the process for applying is that the trees have be watered first, the solution made and that is a stock and from the stock is diluted further and that is the solution that is applied to each individual pot. I always buy two packets of nematodes at a time and they are kept in the fridge to keep the little microscopic nematodes alive until they are used.
That’s the time they are brought out of the fridge to make the stock mixture I’m going to get them I’ll be right back. This is what we grubs look like and they’re the ones that attacked the roots and I’ll locate an adult and also show you what the adult looks like, there we are, that’s what the adult looks like. These nematodes are microscopic organisms and not visible to the naked eye and here is a packet in which they arrived the internal inside of the packaging is sealed in plastic and they look like flour and when they are mixed in water, the water becomes a bit cloudy and I will move on to that phase now. there you are that’s how they’ll appear as a complete Mass, straight out of the pot and I’ve got to mix it up and I’m going to do that now with a wooden cooking spoon I’m going to continue with this until this blob is completely dissolved as you can see the water is turning white and then I’ll add another 10 liters to it, this is 20 liter watering can and that will be the stock The stock has been made and then half a litter to transferred into this can and topped up with a further 5 liters of water to dilute the stock and then it is transferred in to this little watering can and each tree is then individually treated there’s a trees I have got to treat so I’ll carry on with that.
The solution is then applied individually to each tree just like this just as watered into the soil and that basically is it and the process, the complete process is that the trees are watered before the treatment and the treatment you see me just apply and after this the trees will be watered again and that basically is all there is to the treatment. it’s taken about five hours to complete treating all the trees and the nematodes treatment is now complete and I hope that they are as happy as Larry munching away on those Vine weevils. that’s all for now until the next time.
This is Iqbal Khan for mikbonsai in west London And now the after thought. in a recent visit to a graveyard I came across tombstone which has an Inscription I told you I was sick you dig ! okay Beer time aaah… this is one of my favorite beers from Mexico. I first came across it when i crossed the border in Texas from Rio Grande to the other side and it was very hot just like today is 30 Celsius here, 31 Celsius here actually that’s hot for us, any plane’s gone so back to work O..
well another plane some more beer, don’t know if I’ll get any filming done at this rate it’s late afternoon and it’s still very, very hot and we here in the UK are just not used to this heat and it becomes very difficult to do anything, anyway I think the planes nearly gone so Cheers and back to work .