Market Garden Business Plan - Supplier Power

High Permies!

I am currently writing a business plan for an organic market garden. I am currently writing up an industry analysis using the Five forces Framework.
One of the directives of this is determining supplier power within your industry.
To do this I must consider what kind of suppliers I will be relying on to do business....
Can anyone help me determine a few suppliers I have not yet thought of as besides seeds and possibly (but hopefully not) mulch, I cannot think of to many inputs I wouldnt rather source from within my own operation beside initial infrastructural materials.

Thomas mcGrath wrote:Can anyone help me determine a few suppliers I have not yet thought of as besides seeds and possibly (but hopefully not) mulch, I cannot think of to many inputs I wouldnt rather source from within my own operation beside initial infrastructural materials.

Yep,

-Hand tools (trowels, wheelbarrows, hoses, hoes...)
-Power tools (truck and trailer, tiller, lawnmower, the gas to run them...)
-Water (whether that's the electricity to run a well pump, a city water bill, or the cost to build a huge catchment system)
-Packaging (trays, baskets, bags, boxes...)
-Marketing (tent, table, signage, stall rent...)
-Insurance
-Hired help