Feterlize for RazzMatazz Grape and muscadine

What do you suggest for Razzmatazz and Muscadine grape Fertilizer for growing vine growth and setting fruit?

thanks

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I just watched this video made by Isons nursery. Short, precise and too the point. If I am tracking correctly a handful of 10-10-10 every month followed two weeks later by some calcium nitrate. Do this every month from March to July. That’s what I gathered from video and plan to do.

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I also use the Ison model and have for nearly three years with good results. I don’t have Razz but I would use the same method. The other videos he has on getting the vine up and down the wire to me are equally important to getting the vine established. The 12-15" space between vine and fertilizer in my opinion is critical to growing the vine fast without killing it with love.

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My opinion is slightly different which is dont fertilize grapes that much they dont like fertilizer. It took me years to realize they like poor soil. I failed many years at growing grapes because the soil was to good but once i planted them in clay they grew like weeds. Im not saying dont fertilize them im saying that is to much fertilizer in my experience. Some land may require that much but if i did that my grapes would go on strike and never produce. I added a little 10 year aged cow manure compost which benefitted them. 5 gallons per vine was to much so i had to rake it 6-8 feet away. The grapes grew well the year after i spread it out 6-8 feet in every direction.

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@grower79. You probably have already seen these two videos by now. I’m guessing that your Razz is like my OH MY in that it is small with a similar root system. I think a more reasonable expectation for these this year is to reach the wire and part way down it. I didn’t pinch my vine as it got to the wire l just turned it in one direction and in about a week another one popped out for the other side.

How to grow the vine up to the wire and how to get it down the wire. My goal was to get all this done in one year but I only got my vine to about 1’ of the end.

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Here is a perspective similar to mine Why Does Bad Soil Make For Great Wine? | VinePair at least when it comes to the hardier vine with more roots part. Here is more of the same http://www.insideiwm.com/2010/05/05/bad-soil-good-grapes/
My problem was i tried for years to grow my grapes in loam which as this article shows should not be done Redirect Notice . It was a terrible ideal growing them in loam and instead of looking for a worse spot to grow them i made matters worse and tried improving the fertility of the loam! Long term i found in my area rocky clay on a south facing hillside for drainage and sun with a small amount of aged cow manure mixed in is best. Im not trying to buck what many grape growing experts say (every situation is different) but speaking from experience ive found high fertility = bad grapes and poor quality vines.

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yes,Im just kinda scared if the fertilizer would kill the grapes, i think i put 10 10 10 on them last year and not sure if it was the fertilizer or the extreme cold that almost got them, thanks, i have 2 raztmazz might try on just one

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Once established muscadines don’t need much. Razzmatazz has much higher fertilizer needs, probably due to the constant fruit set. I am still trying to sort out exactly what it needs as it seems to be more picky about fertilizer and soil conditions.

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Well that would explain why my grapes seem to love my greenhouse. I grow them directly in the ground which was stripped years ago of all topsoil while levelling the land and I have been trying to amend it ever since. The grapes are at the wall and the roots have the ability to grow outside the greenhouse I only fertilize in the spring and then I leave them alone. I grow Suffolk Seedless, Trollhaugen, Vanessa and Summerset Seedless.

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Speaking of manure…when I was a kid we had a cattle farm so I know how hot it gets. As an adult, I bought in.1990s bags of composted steer manure, still could tell it had manure in it. But this last decade I cannot. When I tried one bag from a hardware store last year they had added huge rocks to it, and it was more like bark dust than manure. I do not know where to get any now. Sad.

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Razzmatazz needs much more fertilizer than my other muscadines. I am fertilizing my 3 year old Razz as a one year old plant (every other week) this year and it is doing much better. I think the constant fruit set is a big drain on the plant.

Last year

This year

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Razz looks impressive and appears to be loaded. It might have just needed a little more time to get established.

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My Razz (2) has grown to 70" in two months. Just made the header cut to force my laterals.

I haven’t fertilized but will…at least this first year as all I am looking for is establishing my laterals.

I used a 48" grow tube.

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