Refill pack
Organic Cat Grass Seed Refill
A 4-ounce seed refill pack for cat grass, wheatgrass, and small tray experiments.
Cat grass seeds
Organic cat grass seeds for repeat tray refills.
Seed refills keep a cat grass routine moving after the first tray. Use only what you need, soak the seed before planting, and restart trays while the grass is still young and fresh.
Shop
Products for this routine.
Compare the trays, planters, lights, mats, and refills that match this growing use case.
Entry kit
Soil-Free Cat Grass Starter Tray
A small reusable tray for cat grass, wheatgrass, and microgreen starts without loose soil mess.
Reusable
Compact Reservoir Grass Planter
A tidy planter format that keeps roots organized in a compact double-layer setup.
Wheat and oat grass are common choices for cat grass
Cat grass mixes often use wheat, oat, barley, rye, or a blend of those grasses. Wheat and oat seed are practical for small trays because they sprout quickly and produce tender blades.
Store seed dry and soak only the next batch
Dry seed keeps best before soaking. Measure a thin, even layer for the tray, soak it, drain it well, and avoid piling seed so deeply that moisture gets trapped.
Refills work best with clean reusable trays
Wash the tray between batches, scrub corners and drain holes, and let parts dry before adding new soaked seed. A clean reset gives each refill a better start.
Buying questions
Quick answers before checkout.
How much cat grass seed should I use?
Use enough soaked seed for one thin, even layer. Thick piles can trap moisture and create odor before the grass is ready.
How long should cat grass seed soak?
Follow the seed directions when provided. For many wheat and oat grass batches, a several-hour soak is enough to wake the seed before spreading.
Can I reuse the same tray with new seed?
Yes, if the tray is washed thoroughly between batches and has no lingering odor, residue, or old root material.