Kdtyjb

I need the node child's "Tree" arm not to overlap the node child "BIRD'S TO ...". I've been trying to load the library backgrouns and use "on backaground layer" in the options for the child "Tree" but that did not trigger changes.

Here my MWE and image of problem:

   documentclass{article}

usepackage{tikz}

usepackage[paperwidth=35cm,paperheight=39cm,left=2cm,top=2cm]{geometry}

usetikzlibrary{mindmap}

pagestyle{empty}

begin{document} 

begin{tikzpicture}[mindmap]

    centering

    tikzset{every node/.style={text width=2cm,minimum size=5cm}}

 node [concept, text=blue!50!black!10,align=center] at (0,0) 

      {Huge Floor} 

child [concept color=blue!50, grow=-90,level distance=412]

    {node [concept] {Huge Sky}

child [concept color=black!20!yellow!20!red!30!blue!10!green!30,grow=240,level distance=210]

    {node [scale=0.9,concept] {Huge BIRD'S TO..}}

child [concept color=black!20!yellow!20!red!30!blue!10!green!30,grow=240,level distance=410]

    {node [scale=0.9,concept] {Huge Tree.}}

    }

;

end{tikzpicture}



end{document}

I suggest to place the "bird" node on top of the finished mindmap:

   documentclass{article}

usepackage{tikz}

usepackage[paperwidth=35cm,paperheight=39cm,left=2cm,top=2cm]{geometry}

usetikzlibrary{mindmap}

usetikzlibrary{calc}

pagestyle{empty}

begin{document} 

begin{tikzpicture}[mindmap]

    centering

    tikzset{every node/.style={text width=2cm,minimum size=5cm}}

 node [concept, text=blue!50!black!10,align=center] at (0,0) 

      {Huge Floor} 

child [concept color=blue!50, grow=-90,level distance=412]

    {node [concept] (sky) {Huge Sky}

child [concept color=black!20!yellow!20!red!30!blue!10!green!30,grow=240,level distance=412]

%    {node [scale=0.9,concept] {Huge BIRD'S TO..}}

%child [concept color=black!20!yellow!20!red!30!blue!10!green!30,grow=240,level distance=410]

    {node [scale=0.9,concept] (tree) {Huge Tree.}}

    }

;





node [extra concept,text width=4.5cm,minimum size=4.5cm,fill=black!20!yellow!20!red!30!blue!10!green!30,draw=black!20!yellow!20!red!30!blue!10!green!30, text=black] at ($(tree)!0.5!(sky)$) {huge BIRD'S TO..};

end{tikzpicture}



end{document}

Inspired by the @samcarter solution, I created a new MWE containing only one change in relation to the use of library backgrounds and scopes so that the child Tree node refers to the parent node Sky but in the background and with a decrease in the minimum size. This way also, create multiple descendants of node childs without obfuscating the text of the previous child node.

   documentclass{article}

usepackage{tikz}

usepackage[paperwidth=35cm,paperheight=39cm,left=2cm,top=2cm]{geometry}

usetikzlibrary{mindmap,backgrounds}

pagestyle{empty}

begin{document} 

begin{tikzpicture}[mindmap]

    centering

    tikzset{every node/.style={text width=2cm,minimum size=5cm}}

 node [concept, text=blue!50!black!10,align=center] at (0,0) 

      {Huge Floor} 

child [concept color=blue!50, grow=-90,level distance=412,on background layer]

    {node [concept] (sky) {Huge Sky}

child [concept color=black!20!yellow!20!red!30!blue!10!green!30,grow=240,level distance=210]

    {node [scale=0.9,concept] {Huge BIRD'S TO..}}};

    begin{scope}[on background layer]

        node [minimum size=3cm] at (sky) {}

child [concept color=black!20!yellow!20!red!30!blue!10!green!30,grow=240,level distance=410]

    {node [scale=0.9,concept] {Huge Tree.}};

    end{scope}

end{tikzpicture}



end{document}