Bayer 2in1 Systemic Rose&Flower:dosage+safety?
 

Hi
I got some granules of container plant dosage Bayer 2 in1 Systemic Rose & Flower Care with .22% Imidclorprid as active ingredient.
It was on sale at Lowes and was a good deal.
I wanted to use it before taking in for the winter some orchids and plants in small containers I have outside.

Does anyone know the dosage for small and medium container sizes? The label only gives the dosage for shrubs and roses in the garden.

I have been searching the web but no indication of how many tbsp /tsp per pot.

There is a Bonide systemic that is .22% imidclorprid
Bonide
that has dosage for different pot sizes.
So I was wondering I could more or less use that dosage.

Would the slow release 6-9-6 fertilizer in the Bayer burn the roots?

There is a version with Disulfoton that I read is way more toxic so I made sure to get the version with Imidclorprid.

2-In-1 Systemic Rose & Flower Care Sizes & Product Labels | Bayer Advanced
thanks
stefano

Stefano - Having read all of the literature, I wouldn't use the product on orchids. Most orchid potting media is fairly open and will allow the product to come into contact with the roots at full strength, my fear is that you will wind up burning the roots. The other consideration for not using it for me would be that winter is coming and I reduce the amount of fertilizer I give to my orchids, I wouldn't consider putting a time released fertilizer on my plants over the winter. I think you would have been better off with the ready to use diluted liquid form of the same product.

Glen,
thanks - makes sense. There was no liquid form. In the NYC area there is less availability of products.

I could also dip the orchid pots in a bucket with neem oil and/or dish soap solution.

I wanted to use the granules on other plants as well. I am growing Banyan Ficuses from seed, then Coccoloba uvifera from seed, some Mangos as well from seed and some Aroids and a bit of other stuff.

Some people use Nutricote or Osmocote on some orchids so I wondered about that. anyway I will grow orchids in my apt where the winter is warm due to central heating and I have some shop lights. so some may not get or need a winter rest (those that do would get really close to the window.

I use time released fertilizer on some orchids, especially the Catasetinae which are very heavy feeders but I make sure that that I buy a formulation that releases for the amount of time that I want to fertilize, they make many formulations rated for 3 months, 6 months etc. If you are growing outside in the warmer weather and inside in the fall and winter under lights that may or may not be adequate, I would still reduce the amount of fertilizer even though your apartment is warm because of NYC steam heat. In my opinion it is better to under- fertilize than to over fertilize in less than ideal conditions, doing so will produce lanky, weak growth that is more susceptible to pests and disease.

I use the Bayer Advanced Tree & Shrub granules, with .55% Merit @ 1 rounded tsp/6" pot. The fertilizer in this product is only 2-1-1. I have seen no apparent root burn.

thanks Msaar, - is Merit=Imidclorprid 1:1? if so at .22 % I should double the dose. Does it work? I wonder if using it at a dosage too low may select resistant pest. Do you apply it far from the roots?

Yes, Merit is the brand name for imidclorpid used in the Bayer products. Yes, for me it works. It has brought a scale infestation under control. I broadcast it evenly on top of the media. It takes 1-2 months to take effect.

Imidiclorprid
 

I've never used granule products like that on orchids before. Though I do know that imidiclorprid is a good product to use for a broad selection of insect pests. It is available in spray form, both in concentrate and ready to use. The insecticide has a long residual with systemic action. I have used a Bayer product called Rose & Flower Insect Killer. It's safe to use on orchids and has never damaged flowers for me. A spray for will also have much faster results. Granule can sometimes take several weeks to work, depending on growing conditions and the plant itself.

Msaar - was your Merit product in granules or powder?