Splitawn Sedge

Year-round

Splitawn Sedge is a low evergreen clump grass for pots or borders, but we could not confirm it is native to the Sacramento area, so treat it as a tough garden plant here rather than a local native.

• This sedge does best with some afternoon shade once you leave the cool coast, so give it part shade rather than a full sun spot in Sacramento.
• It is fine in the clay soil common around Sacramento, and it even grows well tucked under an oak tree.
• It stays short, around a foot tall, and spreads slowly into a soft grassy clump about two to three feet wide over time.
• Plan on regular water through the warm months here. It can handle short dry spells once it is established, but Sacramento heat is much stronger than the coastal fog this plant is used to.
• We checked California native plant references and could not confirm this species is naturally native to the Central Valley floor around Sacramento, so we are not calling it a native pick for this area.

Fall

Fall is when Sacramento's rain comes back, making it a good time to plant, divide, and tidy up the bed.

• Once the first fall rain arrives, usually in October or November, you can cut back on hand watering since the sky starts doing the work.
• Fall is a good time to plant a new sedge or divide a crowded clump here. The ground is cooling but not cold, and rain is on the way to help new roots settle in.
• If the clump has spread past where you want it along a path or bed edge, fall is a good time to divide it and trim the edges back into shape.
• Keep an eye out for winter weeds moving into any bare soil around the sedge while it fills back in.

Trimming the bed edges this way keeps the front yard looking tidy and HOA-conscious.

Winter

Winter is mostly hands off. Sacramento's mild, wet winters suit this evergreen sedge, with light frost the main thing to watch.

• Sacramento winters are mild and wet, and this sedge stays evergreen through them, so there is not much active care needed.
• It handles the area's usual light frosts fine. If a harder freeze is forecast, a layer of mulch over the roots gives some extra protection.
• Clay soil holds onto water, so check the spot is not sitting in a puddle after heavy rain. Standing water for too long can rot the roots.
• Hold off on fertilizer in winter. Growth slows down and it does not need the extra push.

Spring

Spring in Sacramento is the window for grooming old foliage and getting a new plant established before the dry season.

• Before new growth picks up in late winter or early spring, comb out or shear off any brown, tired foliage from last year.
• If you are planting a new one, get it in the ground in early spring while Sacramento still gets some rain, so the roots have time to settle in before summer heat arrives.
• Lay down a couple inches of mulch around the base now. It will help hold moisture once the rain tapers off.
• Fresh green blades should start showing through spring. In decent soil, it usually does not need fertilizer.

A quick grooming cut in early spring keeps the clump looking tidy and HOA-friendly from the street.

Summer

Summer is the trickiest season here. Sacramento heat and dryness are much harder on this sedge than its coastal home turf.

• Sacramento summers are hot and dry with little to no rain, so plan on watering this sedge regularly through the season instead of letting it dry out.
• Afternoon shade really matters here. A spot in full sun all day in interior valley heat can scorch the leaf tips.
• If the tips start turning brown and crunchy during a heat wave, that is usually a sign it needs water more often, not less.
• A layer of mulch around the base helps the soil hold moisture and keeps the roots a bit cooler.

Year-round

Year-round care for splitawn sedge around Eureka, CA: sun to part shade, adaptable soil, and low to moderate water.

• It grows in full sun or partial shade, and does best with some shade unless it is right along the coast.
• It adapts to many soils, including clay and the ground under oak trees.
• Once established, water about once a week at most. It also tolerates periods of dryness.
• It stays about 6 to 12 inches tall and spreads slowly to roughly 2 feet wide.
• Calscape lists cold tolerance to 15 F.

A low clump along a path or bed edge reads as a soft, deliberate border.

Year-round

Year-round care for splitawn sedge around Seattle, WA: sun to part shade, adaptable soil, and low to moderate water.

• It grows in full sun or partial shade, and does best with some shade unless it is right along the coast.
• It adapts to many soils, including clay and the ground under oak trees.
• Once established, water about once a week at most. It also tolerates periods of dryness.
• It stays about 6 to 12 inches tall and spreads slowly to roughly 2 feet wide.
• Calscape lists cold tolerance to 15 F.

A low clump along a path or bed edge reads as a soft, deliberate border.