SEO all-in-one plugin does not use my blog descriptions

I am using seo all-in-one plugin but it does not appear to be using the description i enter in the description field for my blogs instead it mostly uses my default meta tag description and at times the first lines of my blog.i have plucked some examples from site:www.crystalsoil.com

this is my default meta tag description
Decorations | Crystal Soil
Crystal Soil absorb and store water for plants and cut flowers to keep them hydrated and healthy. Use crystal soil to nourish, water and extend the life of …
https://www.crystalsoil.com/tag/decorations – Cached –

Taken from the first few lines of my blog
Suitable Plants for Crystal Soil and Hydroculture | Crystal Soil
When deciding what plants to pot in crystal soil consider the conditions in which the particular plant thrives.While some plants prefer direct sunlight like …
https://www.crystalsoil.com/water-gel…/how-to-pot-plants-in-crystal-soil – Cached –

Taken from SEO plugin description
water crystals for cut flowers and plants | Crystal Soil | Water …
18 Feb 2010 … water crystals is the ideal mothers day gift on mothers day. Don’t buy flowers without it.

As you can see from site:crystalsoil.com there are many instances of my blogs using the default meta description.How can i make it consistent so it only takes the description from the seo description i enter for each blog? this will then ensure individuality.