Ultimate
Ultimate
MicroLife Ultimate 8-4-6
is an extremely powerful, homogenous, granulated All Organic Biological fertilizer containing: Fish, Kelp, Molasses, Emery Humates, Rock Phosphate, Wheat Middling’s, Soy Meal, Cottonseed Meal, Alfalfa, Corn Meal, Kmag, Potassium Sulfate, Iron Sulfate, 18 select Amino Acids, Folic Acid, Vitamins, plus the MicroGro Supreme Bio-Inoculant package which contains billions of beneficial microorganisms including Endo & Ecto Mycorrhizal fungi. All ingredients are included in meaningful amounts.
MicroLife Ultimate 8-4-6
improves all soils by feeding the indigenous microbes, adding billions more, by providing specific soil improvers like polysaccharides, humic acid, fulvic acid and the major building blocks of life. MicroLife Ultimate 8-4-6 builds big root systems which further improves the soil and reduces water use.
Rates:
Building Beds and Gardens: 40 lb per 1,000 sq ft worked into the soil Top Dressing of Ornamentals: 20 – 40 lb per 1,000 sq ft.
Repeat every 3 – 4 months
Turfgrass: 12 – 15 lb per 1,000 sq ft
Tree installations and Containers: 2.5 oz per 5 gal size
Couldn't load pickup availability
We offer custom mixes at an additional $50 charge. Simply reach out!
How Ordering Works
Add your products to cart
Browse mulch, soil, stone, sand, and more. Pick the quantities you need. One simple checkout gets everything ready for your project.
Choose pick-up or local delivery
Choose pickup to have your order ready at our yard, or local delivery to bring it straight to your driveway or job site. Either way, we’ll handle the heavy lifting.
Add your information
At checkout, provide your name, phone number, and address for delivery, plus your preferred date and morning or afternoon window. This helps us schedule your order the way that works for you.
We'll see you soon!
Our team will give you a quick call to confirm your order and timing. Once everything’s set, you’re good to go—we’ll have it ready or deliver it when expected.
All About Supersacks
What are Supersacks?
What are Supersacks?
Super sacks are industrial-grade flexible bags designed to store and transport bulk materials. Rather than loose soil or material, consider it like a shopping back for your product!
How much do they cost?
How much do they cost?
Each sack is $30 in addition to the material cost.
What is the cost?
What is the cost?
All our supersacks have a flat $150 delivery fee up to 20 miles from Sienna Mulch.
What's the benefit of a Supersack over loose material?
What's the benefit of a Supersack over loose material?
This option is for the homeowner and landscaper that loves organization and cleanliness. Also, it allows you to order multiple items in one delivery.

