How to randomly fill an area with daisies in TikZ

Question

As in this question I would like to randomly fill an area, but not with simple dots, with more complex shapes (daisies).

Here is what I've done so far (suggestions for more beautiful daisies are also welcome):

If it was possible, I would like to randomly put more big daisies at the top of the area and less at the bottom, vice-versa for little daisies and, as for the middle ones, more in the center and less at the top and at the bottom.

EDIT: more and more difficult: I'd like to avoid clipped daisies on the border and overlapping ones.

MWE:

\documentclass[tikz, preview=true, border=0.4cm]{standalone}
\usetikzlibrary{decorations.pathmorphing}

\newcommand{\daisy}[3]% scale, 1st coord, 2nd coord
    {%
    \begin{scope}[transform canvas={scale=#1}]]%
        \draw [fill=white,decorate,decoration={coil,aspect=-1,segment length=4.13mm}] (#2,#3) circle (.4cm);
        \node[circle, fill=yellow, draw=red] (center) at (#2,#3) {};%
    \end{scope}%
    }%

\begin{document}‎

\begin{tikzpicture}
    \fill[green,rounded corners=1mm]  (0,10) -- (5,15) -- (11,14) -- (14,11) -- (15,5) -- (10,0) -- (1,1) -- cycle;
    \daisy{1.5}{5}{7}
    \daisy{1}{7}{7}
    \daisy{.7}{10}{7}
\end{tikzpicture}%

\end{document}

Answer 1

Not sure if this is exactly what is required, but it shows how the the size of the daisies can be altered according to their vertical position over an arbitrary filling area:

\documentclass[tikz,border=5]{standalone}
\usetikzlibrary{calc}
\tikzset{pics/daisy/.style={code={
\foreach \i in {0,30}\foreach \j in {0,60,...,300}
\path [draw=gray, fill=white, rotate=\i+\j]
  (0,0) .. controls ++(-30:1/2) and ++(30:1/2) .. cycle;
\path [draw=orange, fill=yellow] circle [radius=1/8];
}},
daisy fill/.style={fill=green, path picture={
  \pgfnodealias{@}{path picture bounding box}% For convenience.  
  \foreach \i [evaluate={\x=rnd; \y=rnd; \s=0.25+rnd+\y;}] in {0,...,100}
    \path ($(@.west)!\x!(@.east)$) coordinate (@1)
      ($(@.south)!\y!(@.north)$) coordinate (@2)
      (@1 |- @2) pic [scale=\s] {daisy};
}}}
\begin{document}
\begin{tikzpicture}
\path [daisy fill]
(0,10) -- (5,15) -- (11,14) -- (14,11) --
(15,5) -- (10,0) -- (1,1) -- cycle;
\end{tikzpicture} 
\end{document}