Seed Mix Filler - Rice Hulls

$24.00 - $38.00

500 sq ft
1000 sq ft
1/8 acre

Shipping fee is included (within the contiguous US). To facilitate more even distribution of your native seed mix over your planting site, we encourage stirring a filler material in a container with your seeds prior to hand-sowing to bulk up the overall volume. This "spaces out" the seed in your handfuls from the mixture, enhancing wider distribution as you broadcast.  Material that can serve as a seed mix filler can be sand, sawdust, or potting soil.  If a filler material is not readily available to you, we offer environmentally-friendly Par Boiled Rice Hulls at these approximate quantities:

~2 gallons (3.25 lbs) = for a 500 sq ft seed mix
~4 gallons (6.5 lbs) = 1000 sq ft seed mix
~10 gallons (13 lbs) = 1/8 acre seed mix

2 Questions asked on Seed Mix Filler - Rice Hulls

what is the recommended ratio of rice hulls to seed?
We recommend about 1/2 to 1 bushel of filler for every 1000 sq ft seed mix. Unsure what measurements are in a bushel? Me too! :) 1 bushel = approx 8 gallons. Our 1000 sq foot seed mixes come in a bag about the size of a paper lunch sack, so you are bulking up that native seed quite a bit by adding a 5 gallon bucket, or more of filler before hand sowing!
If I'm using sand, sawdust, or potting soil as filler, how much do I need for your Tallgrass exposed clay subsoil 500 sq foot mix?
Hi Becky. I think roughly a 5-gallon bucket of sand or sawdust would do the trick. We say to use one-half to one bushel of filler per 1000 square feet. A bushel equals eight gallons or 1.24 cubic feet, so you need about 4 gallons.


Growing your own plants from seed is the most economical way to add natives to your home. Before you get started, one of the most important things to know about the seeds of wild plants is that many have built-in dormancy mechanisms that prevent the seed from germinating. In nature, this prevents a population of plants from germinating all at once, before killing frosts, or in times of drought. To propagate native plants, a gardener must break this dormancy before seed will grow.

Each species is different, so be sure to check the GERMINATION CODE listed on the website, in the catalog, or on your seed packet. Then, follow the GERMINATION INSTRUCTIONS prior to planting. Some species don't need any pre-treatment to germinate, but some species have dormancy mechanisms that must be broken before the seed will germinate. Some dormancy can be broken in a few minutes, but some species take months or even years.

Seed dormancy can be broken artificially by prolonged refrigeration of damp seed in the process of cold/moist STRATIFICATION. A less complicated approach is to let nature handle the stratifying through a dormant seeding, sowing seeds on the surface of a weed-free site in late fall or winter. Tucked safely beneath the snow, seeds will be conditioned by weathering to make germination possible in subsequent growing seasons.

To learn more, read our BLOG: How to Germinate Native Seeds

Dormant Bare Root Plants

We dig plants when they are dormant from our outdoor beds and ship them April-May and October. Some species go dormant in the summer and we can ship them July/August. We are among the few still employing this production method, which is labor intensive but plant-friendly. They arrive to you dormant, with little to no top-growth (bare-root), packed in peat moss. They should be planted as soon as possible. Unlike greenhouse-grown plants, bare-root plants can be planted during cold weather or anytime the soil is not frozen. A root photo is included with each species to illustrate the optimal depth and orientation. Planting instructions/care are also included with each order.

Download: Installing Your Bare-Root Plants

Potted Plants

3-packs and trays of 32, 38, or 50 plants leave our Midwest greenhouses based on species readiness (being well-rooted for transit) and order date; Spring shipping is typically early May through June, and Fall shipping is mid-August through September. Potted 3-packs and trays of 38 plugs are started from seed in the winter so are typically 3-4 months old when they ship. Trays of 32/50 plugs are usually overwintered so are 1 year old. Plant tray cells are approximately 2” wide x 5” deep in the trays of 38 and 50, and 2.5" wide x 3.5" deep in the 3-packs and trays of 32; ideal for deep-rooted natives. Full-color tags and planting & care instructions are included with each order.

Download: Planting and Care of Potted Plants

*PLEASE NOTE: we are a mail order nursery and have no retail facilities, but you may pick up your order if prior arrangements are made. Pick up orders are subject to 7.375% MN Sales Tax.

Shipping & Handling Charges

TOOL SHED and BOOKS have the shipping fee included in the cost of the item. In other words, they SHIP FREE!

Shipping Season

SEED, TOOLS and BOOKS are sent year-round. Most orders ship within a day or two upon receipt.


We ship using USPS, UPS and Spee Dee.



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