Repotting guide

When & how to repot Mosquito Plant (Agastache cana)

Also called Mosquito Plant, Texas Hummingbird Mint, Double Bubble Mint, Bubblegum Mint.

More about mosquito plant

About Mosquito Plant

Agastache cana · also called Mosquito Plant, Texas Hummingbird Mint · flowering

A heat-loving, drought-tolerant perennial native to the Chihuahuan Desert borderlands of Texas and New Mexico. It produces dense spikes of deep rose-pink tubular flowers beloved by hummingbirds and butterflies from midsummer through autumn. Foliage releases a bubblegum-mint scent when crushed. Excellent for xeriscape and pollinator gardens.

Mature size: 60–90 cm tall, 45–60 cm wide

Watch for — Crown and root rot: The most common cause of plant loss, especially in cool-wet climates or clay soils. Plant in raised beds or slopes with excellent drainage; avoid mulching directly against the crown.

How to tell mosquito plant needs repotting

Repotting on a calendar is less reliable than reading the plant. For mosquito plant, watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot mosquito plant

Every 2–3 years, into bone-dry mix. Mosquito Plant's growth habit — upright, bushy perennial; woody at base with age — sets the pace. A heat-loving, drought-tolerant perennial native to the Chihuahuan Desert borderlands of Texas and New Mexico. It produces dense spikes of deep rose-pink tubular flowers beloved by hummingbirds and butterflies from midsummer through autumn. Foliage releases a bubblegum-mint scent when crushed. Excellent for xeriscape and pollinator gardens.

What size pot to step mosquito plant up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Mosquito Plant stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot mosquito plant

Spring or summer, while mosquito plant is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting mosquito plant

Repot dry. Do not water mosquito plant for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty sandy loam or gravelly well-drained soil, ph 6.0–7.5 ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set mosquito plant at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep mosquito plant completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for mosquito plant

Mosquito Plant wants sandy loam or gravelly well-drained soil, ph 6.0–7.5. Thrives in lean, gritty, sharply draining soils that mimic its native desert habitat. Rich, moist soils cause rank, floppy growth and increase susceptibility to root rot. Avoid clay without substantial amendment. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting mosquito plant — frequently asked questions

How often should you repot mosquito plant?

Every 2–3 years, into bone-dry mix for mosquito plant. Repot mosquito plant every 2–3 years into a snug pot of sandy loam or gravelly well-drained soil, ph 6.0–7.5, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does mosquito plant need?

When is the best time of year to repot mosquito plant?

Should you water mosquito plant after repotting?

No — not straight away. Repot mosquito plant into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise mosquito plant after repotting?

Not immediately. Wait about 3 weeks after repotting mosquito plant. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.