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ShadowGuy's Lawn Journal - Kikuyu to PRG

31K views 57 replies 5 participants last post by  ShadowGuy 
#1 ·
We are approaching a year in our new place, and I have been learning and taking care of a mostly Kikuyu/Bermuda mix lawn in the back yard. I wanted to give a go with the current grass, and use it for an opportunity to learn before doing a full renovation. I have not done much extra in the front yard as the Kikuyu/St Augustine/PRG mix seems to look decent and better than most in the neighborhood with just a little extra love. I was surprised to see the little bit the PRG is still doing well through the summer. The front parkway area has not done very well.

Being in the transition zone, I have the option to do a cool season grass too. I have liked seeing the PRG results from others on the forum, both as an overseed and a single grass type. We are coastal, so I think I have a decent shot at keeping PRG looking good year round as it is very rare to have temps over 90 and even rarer to have a hard freeze.

This front parkway section has not faired very well, it is mostly Kikuyu and Bermuda. But since I left it long to match the Kikuyu/St Augustine mix in the front lawn, it does not look very good. It is also horribly uneven, with an odd mound and hole from where they removed a 60' pine tree and replaced it with the current tree a few years ago before we moved in.

So the plan is to follow Cool Season Renovation Guide, level it, and go with SS9000 PRG. The area is about 150sqft, so this will be a good practice to see what kind of results I can get. If I can keep it looking good through next summer, I would consider a renovation for the rest of the front lawn to match.

Seed down date is planned fro 10/2 and I just ordered the seed.

Before pics:








 
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#2 ·
A little ahead of schedule. I decided to kill off the grass early and then scalped to 1" to get rid of most of the debris. It's been about a week since the first kill and I have sprayed again to get what was greening up. Today I dug up half the area and removed the turf. I am trying to save most the soil, so I am moving the cut up dead sod to a tarp and letting it dry out and shaking out the dirt to reuse. Since I am reusing the same dirt, I expect I will probably get some Bermuda or Kikuyu coming back. I still plan on getting some new topsoil and sand to level the top 2-3". I just hope it will be in the next 5 weeks so I can kill it before the seed goes down. Planning to put seed down mid September now.

I figured out why I had humps on either side of the tree. When they replaced the tree years ago the just laid sod on top of the damaged sod.

Halfway there to removing the old grass.



 
#3 ·
Shortly after my last update, I finished removing the old turf and did a rough leveling/fallowing with the existing topsoil. A week later, I had some bermuda/kikyuyu come back and hit it with Gly. It has been another week, and I have even more bemuda and kikuyu coming back. I have been watering as normal and encouraging growth.

This weekend, I did a second round of leveling as the watering has caused settling, and I did a bit of compaction work with a half sheet of plywood and my bodyweight.

This week, I have another round of gly planned and to bring in a little bit of sand and topsoil for a final leveling before seed down. 3 weeks until seed down.

Don't mind the grass in the front, I had to do a mini scalp HOC reset, as I was maxing out my rotary height. It is still recovering.





 
#4 ·
I am a bit ahead of schedule and I am thinking of bumping up my seed down date to next weekend.

Today I leveled the parkway with a 80/20 sand top soil.

I also decided to overseed the rest of the yard, so it will match. I cut down the kikuyu and St. Augustine to 1.25 inches with the rotary. Then I used a thatch rake across all 1000sqft. I need to get a SunJoe, that was rough.

Tried to go lower with my McLane, but it was bogging down and jamming up the reel. I think going from 1.25 to .875 was too much, especially with all the runners. Ran out of time today, but I still need to edge/ trim and run the bagger across it a few more times to pick up more debris.



 
#5 ·
Seed Down!

I decided to seed the full reno area in the parkway today. I was running out of reasons to wait, since I fixed the broken sprinkler head. Good thing I did. I realized I had only bought a 5lb bag of seed. Only needed 1.2lb of seed for the 150sqft of parkway at 8lb/k, but it only left me with only 3.8lbs of seed for the other ~850sqft of the front lawn. I thought I had ordered a 10lb bag rather than 5lbs.

The 3.8lb of seed would be at the minimum lb/k amount, but I wanted a thicker overseed as I really thinned out the existing turf. I ordered a 10lb bag and hopefully it will be here in a week or so.

Raked, spread seed, raked again, pressed in with my feet, then spread peat moss.



 
#9 ·
It has been 5-7 days after germination and the grass was pushing 1.5 -2". I know I wanted to start seeding the thinner areas, but I didn't want the older grass getting too tall. I decided to use my reel mower set to 3/4" to trim the grass. I know it was earlier than most, but I was beyond the 1/3 rule and didn't want it to be more drastic.

After the mow, I seeded the thin areas with a mix of peat moss and seed, and then put down some starter fertilizer (18-24-6) to help the new grass bounce back. I didn't post it, but I also put down some Propiconazole earlier in the week for both the parkway and the front lawn. The humidity recently spiked and I wanted to head off any fungus while I am still watering 4 times a day

I didn't go with Tenacity at seed down, so I have been hand pulling new germinated weeds and painting the bermuda with Gly as it pop ups. There only has been a couple of weeds and bemuda sprouts. So far so good on the weeds.

Before mow:


After mow:


 
#10 ·
Updates on the reno and overseed.

10 DAG for the reno and it is growing fast and getting thicker. Still some bare spots, but I think I need to give it more time before doing any more seeding. I will have plenty of time, in my zone, I don't have much of a cold winter.

The overseed is about 7 days after seeding and maybe 4 days post germination. It is growing in quick, but it is still early. It will be interesting how it turns out as the Kikuyu and the St Augustine doesn't totally go dormant here. If I can get the PRG to be thick enough, I may even kill the Kikuyu and St Augustine with Quinclorac. I know it works, cause I nearly killed off my backyard last spring by mistake.







 
#12 ·
2nd mow at .75" of the parkway at 12 DAG





First mow of the front yard at 1.25" with a rotary bagged at 5-7 DAG. Once again, probably on the early side, but I needed to clean up the kikuyu and St Augustine.

I put down of 18-24-6 starter fert at the bag rate. Would like to get it down to .75" to match the parkway, but it is rather soft and bumpy and I didn't want to tear up my new seedlings. When it is further established, maybe I can get the reel on it.

 
#13 ·
Mowed the front yard at 1.25" with the bagger, and went back and reseeded and top dressed the thin spots. Mostly around the edges and corners. I know its is still early at 12 DAG, but hopefull it will continue to thicken up. I need to exercise my patience.

For the parkway at 17 DAG, I reel mowed again at .75" and seeded and top dressed the thin areas again. mostly around the edges.





 
#17 ·
Couple of setbacks. The kikuyu was coming back quickly on the parkway, so a few days ago I used some Image All in One (quinoclorac & sulfentrazone). Mixed it light, but it still discolored. On the positive side it wiped out the kikuyu, it appears to have burnt the tips of the PRG, and I am hoping it will recover.

I was running my '99 McClane and I notice that it is no longer spinning the reel. The chain broke at the coupler. So with half my yard mowed, I brought out my backup, the '88 10 blade McLane. No roller on that one, so it's not striping as well.

 
#18 ·
The parkway recovered from the burn, and no sign of weeds at this point. Still have some thin areas that just won't fill in completely.

The front yard is not striping as well as I would have hoped. The St. Augustine and Kikuyu have yet to go dormant, so I think that has something to do with it. Looking at pictures from last year, it may not be until Dec/Jan till they really stop growing, but never really go brown.

Cutting the parkway at 0.5" and the yard at .75".

It amazing how much the ground has moved in the parkway. It was dead flat before I seeded. I think I will be sanding come this spring, to see if I can get it to go lower.


 
#24 ·
Nice journal. That warm season mix does not look bad at all. Since it's doing well, and also allowing PR to survive, why not consider just doing a yearly (if needed) PR overseed in early Fall, right into the Kikuyu/etc. mix? Kikuyu is be coming more accepted as a turfgrass lately, and the Bermuda you have is probably an older type that isn't quite as aggressive, and allows other grasses to grow to an extent.

Or maybe Reno part of the lawn, and go with the overseed plan for the rest. Cool/warm season mixes in the transition zone are becoming more accepted as well. I think they are the future.

Our SiteOne manager spoke favorably of Kikuyu out West (he went to school for turf).

I can tell you now, that PR-only hellstrip is likely going to be a battle in the Summer, to keep alive. We have the same problem here, in sunny areas. But Winters are too cold for anything but Zoysia in warm season grass, and it's brown at least 5 months. I think a cool/warm mix would work well in your area. Your existing grass is strong because it's been there so long. Use that to your advantage.
 
#25 ·
Green said:
Nice journal. That warm season mix does not look bad at all. Since it's doing well, and also allowing PR to survive, why not consider just doing a yearly (if needed) PR overseed in early Fall, right into the Kikuyu/etc. mix? Kikuyu is be coming more accepted as a turfgrass lately, and the Bermuda you have is probably an older type that isn't quite as aggressive, and allows other grasses to grow to an extent.

Or maybe Reno part of the lawn, and go with the overseed plan for the rest. Cool/warm season mixes in the transition zone are becoming more accepted as well. I think they are the future.

Our SiteOne manager spoke favorably of Kikuyu out West (he went to school for turf).

I can tell you now, that PR-only hellstrip is likely going to be a battle in the Summer, to keep alive. We have the same problem here, in sunny areas. But Winters are too cold for anything but Zoysia in warm season grass, and it's brown at least 5 months. I think a cool/warm mix would work well in your area. Your existing grass is strong because it's been there so long. Use that to your advantage.
Thanks for the comments. For the summer 2022, I think I will do just as you suggested and keep the kik/prg mix. There is a bit of SA in there too, but I don't think it is going to survive the 0.5" cut all winter. It recently consistently been getting into the 40's overnight, and the kik is starting to yellow more. We have a storm rolling in tomorrow, so I just did another mow since it will be too wet until next week to mow again. Bumped it up to 0.75, to help hide the yellow kik.

We will see about keeping the PR going through summer in the hell-stripe, if I fail, then overseed in fall, and do another reno in spring. :) Maybe bentgrass?. Neither the bermuda or Kik has really come back in the hellstrip, but we will see when things start heating up next May. I might not have a choice in the matter.

 
#26 ·
Very cool reply and plan, and please keep the journal going in this section...I and many others only have time to look at cool season forums. Good luck!

You can keep the PR hellstrip going all Summer with lots of water and maybe some fungicide...if you plan to be out hand watering every couple of days...not sure if you have a lot of restrictions on watering there...but yeah.
 
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