Seeding guide

Clover to Grass Seed Ratio: 3–5% by Weight, From University Research

By Jon P. — founder of LawnSeedPicker and home-yard DIY enthusiast · Published October 24, 2026

Mix 3–5% microclover by weight into tall fescue seed. At the usual 6 lb of tall fescue per 1,000 sq ft, that is about 0.2 to 0.3 lb of microclover. Going higher doesn't help, and above 10% the lawn may end up mostly clover.

Why such a small amount

• Clover spreads by stolons, so a low percentage in the seed mix is enough for it to establish in a lawn.
• University of Maryland research found 3–5% by weight gives a mix where neither the tall fescue nor the microclover dominates.
• Higher rates of microclover are not beneficial, and above 10% may result in a stand that is predominately microclover.

Many guides online suggest more clover than this, often right up to the level the Maryland research warns can tip a lawn to mostly clover.

How much microclover to mix in (tall fescue)

Tall fescue is usually seeded at 6–8 lb per 1,000 sq ft. Mix 3–5% microclover by weight into that seed. At a 6 lb tall fescue rate, that works out to about 0.2 to 0.3 lb of microclover.

To work out the amount for your own lawn, use the clover seed calculator.

What the seed companies say

Both microclover sellers we checked give the same figure: 5% of the grass seed's weight, or 50 g of microclover per 1 kg of grass seed. These are vendor figures, and they sit inside the university range.

DLF, which breeds Microclover, does not recommend starting a lawn with clover alone.

A note on the variety

The Maryland research used 'Pirouette', one microclover variety. The microclover we link below is a related microclover variety; it was not the one tested.

Before you mix

• Shade: microclover has very poor shade tolerance and shouldn't be expected to persist under trees or in very shady spots.
• Soil pH: a pH of 6.0 to 7.0 matters for the root-nodule bacteria that fix nitrogen; in soil that's too acidic, the nitrogen benefit won't show up.
• Timing: late summer to early fall is the preferred time to seed a tall fescue–microclover lawn. Spring and late fall can work, but the risk of a poor stand goes up substantially.
• Heat and drought: in long stretches of heat and drought, microclover can die out entirely; overseed it again in fall if that happens.
• Winter: microclover's top growth dies back in early winter and regrows in early spring. Seeded too heavily, that can leave bare ground prone to erosion.
• It mixes well with tall fescue and with Kentucky bluegrass when seeded at recommended rates.

Want mostly clover, or overseeding?

For a clover-only stand, or for overseeding clover into an existing lawn, use the clover seed calculator. Its rates come from seed sellers, because the university source here covers mixing into new tall fescue seed only.

Where to buy

If you want to try this mix, Outsidepride Miniclover is one microclover seed option.

Related

Related reading: the clover lawn guide for the full picture, overseeding with clover for adding clover into an existing lawn, microclover vs. white clover for choosing between the two, and the grass seed calculator for working out your tall fescue rate.