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Plant care

Sessile-Leaf Tick Trefoil (Sessile tick clover) care

Desmodium sessilifolium

Also called Sessile-leaf tick trefoil, Sessile tick clover, Stiff tick trefoil.

RHS H6USDA 4-8Pet-safeIndoor 60–120 cm (24–48 in) tall and 30–60 cm (12–24 in) wide.

Watering rhythm

10-14days

Water every 10–14 days during establishment; once established it is drought-tolerant in typical dry woodland and upland conditions

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Light

Bright indirect light (just back from a sunny window)

Soil

Sandy loam, rocky loam, or light clay-loam; dry to medium moisture; pH 5.0–7.0

Humidity

Moderate (40–70% RH)

Temp

-25°C to 38°C

Pet safety

Pet-safe

Mature size

60–120 cm (24–48 in) tall and 30–60 cm (12–24 in) wide.

Care at a glance

Light

Sessile-Leaf Tick Trefoil is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Uniquely among cultivated Desmodium species, it tolerates open woodland light conditions (dappled sun to 4 hours direct sun); it flowers well in partial shade unlike most prairie tick trefoils, though full sun is acceptable in cooler or moist sites. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water sessile-leaf tick trefoil water every 10–14 days during establishment; once established it is drought-tolerant in typical dry woodland and upland conditions. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Naturally sited in dry to medium-moisture upland soils; avoid consistently wet conditions. In well-drained woodland settings it rarely needs supplemental irrigation beyond the first season.

Soil and pot

Sessile-Leaf Tick Trefoil grows best in sandy loam, rocky loam, or light clay-loam; dry to medium moisture; ph 5.0–7.0. Best in moderately acidic to neutral, well-drained soils typical of eastern deciduous woodland edges and rocky upland glades; tolerates low fertility and does not need organic amendment. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Sessile-Leaf Tick Trefoil sits happiest at around Moderate (40–70% RH) humidity and -25°C to 38°C (-13°F to 100°F). Native to the humid eastern United States woodland zone; tolerates the moderate to high humidity of its native range without fungal problems when given good air circulation. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed sessile-leaf tick trefoil sparingly. No fertiliser required; a nitrogen-fixing legume naturally suited to lean woodland soils — avoid feeding which promotes lax, floppy stems. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on sessile-leaf tick trefoil in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Loment pods adhering to pets and clothing — The segmented seed pods are aggressively adhesive to fur and textiles via minute hooked hairs; inspect pets after contact and remove pods manually to prevent compacted mats forming in long-coated breeds.
  • Loss of vigour in dense shade — While more shade-tolerant than most Desmodium species, plants in deep shade (less than 3 hours of direct or dappled light) become spindly, rarely flower, and decline over 2–3 seasons; thin the overstorey or relocate to a brighter woodland edge.

Propagation

Seed is the primary method — scarify seed coat lightly with sandpaper, cold-stratify for 60 days, and sow indoors in late winter or direct-sow outdoors in autumn; clump division in early spring is possible in established multi-stemmed plants. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Sessile-Leaf Tick Trefoil is pet-safe. Desmodium sessilifolium is not listed by the ASPCA as toxic to cats or dogs; the primary concern for pets is the sticky barbed loment seed pods that adhere to fur and can cause matting or skin irritation. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Sessile-Leaf Tick Trefoil care — frequently asked questions

What is the common name for Desmodium sessilifolium?

Desmodium sessilifolium is most commonly called Sessile-Leaf Tick Trefoil, but it is also known as Sessile-leaf tick trefoil, Sessile tick clover, Stiff tick trefoil. The names refer to the same species, so care instructions for Sessile-Leaf Tick Trefoil apply identically to anything sold as Sessile tick clover.

How much light does sessile-leaf tick trefoil need?

Sessile-Leaf Tick Trefoil grows best in bright indirect light (just back from a sunny window). Uniquely among cultivated Desmodium species, it tolerates open woodland light conditions (dappled sun to 4 hours direct sun); it flowers well in partial shade unlike most prairie tick trefoils, though full sun is acceptable in cooler or moist sites.

How often should I water sessile-leaf tick trefoil?

Water sessile-leaf tick trefoil water every 10–14 days during establishment; once established it is drought-tolerant in typical dry woodland and upland conditions. Naturally sited in dry to medium-moisture upland soils; avoid consistently wet conditions. In well-drained woodland settings it rarely needs supplemental irrigation beyond the first season. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is sessile-leaf tick trefoil toxic to cats and dogs?

Sessile-Leaf Tick Trefoil is pet-safe. Desmodium sessilifolium is not listed by the ASPCA as toxic to cats or dogs; the primary concern for pets is the sticky barbed loment seed pods that adhere to fur and can cause matting or skin irritation.

What USDA hardiness zone does sessile-leaf tick trefoil grow in?

Sessile-Leaf Tick Trefoil is rated for USDA zone 4-8 and RHS hardiness H6. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Sessile-Leaf Tick Trefoil deep-dive guides

Every aspect of sessile-leaf tick trefoil care, each with its own calibrated guide:

Featured in these plant shortlists

Sessile-Leaf Tick Trefoil qualifies for 9 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Sessile-Leaf Tick Trefoil is also known as Sessile-leaf tick trefoil, Sessile tick clover, and Stiff tick trefoil.