I generated two different graphics which have different labels, is it possible two merge it?

library(corrplot) 
par(mfrow=c(1,2)) 
col<- colorRampPalette(c("#78CB65","#EBF6DF","#AEDAAA")) 
corrplot(as.matrix(samp4), is.corr = FALSE, type = 'lower', method = 'color', addCoef.col = 'black', number.cex=0.50,
                 col=col(11),
                 tl.col = "black",
                 tl.cex = 0.8,
                 title = "OrthoANI")
corrplot(as.matrix(ddh2), is.corr = FALSE, type = 'upper', method = 'color', addCoef.col = 'black', number.cex=0.50,
             col=col(11),
             tl.col = "black",
             tl.cex = 0.8,
             title = "ddh")

I would like two merge it like this

I tried making only one data from ddh2 and samp4, but the problem is that the threshold and values are different, so the label has to be different thanks