custom url rewrite

Hi,
I have problem with url rewrites in wordpress.

I have activated premalinks from admin site, now the url structure is like : localhost/wordpress/page_name.
I have created one plugin named garden, It is creating one peage in frontend named garden.
Now i can access the page like : localhost/wordpress/garden. and with parameter like localhost/wordpress/garden/?garden_id=205.
I have tried so much to create urls lke localhost/wordpress/garden/garden_name/ — or — localhost/wordpress/garden/205/ . but there is always an error “page not found”.
(I want to use same page to display different information according to the received parameters )
I understand using /205/ or /garden_name/ will not display the result but atleast it should not give “page not foung error”.

Now my need is i to display urls like localhost/wordpress/garden/garden_name/.

add_action( 'init', 'add_garden_rules' );

function add_garden_rules() {
  add_rewrite_rule("^garden/([^/]*)/([^/]*)/?","index.php?page_id=345&garden_id=$matches[1]&variety=$matches[2]",'top');
}

Please help me if anybody can.

I am waiting for a valuable reply.

Thanks,

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