Pickerel-weed

Year-round

Pickerelweed (Pontederia cordata) is an easy pond and water garden plant that lives standing in water, not in dry garden soil.

• Set the pot on a shelf or a stack of bricks so about 1 to 6 inches of water covers the soil surface year round, this plant wants wet feet at all times.
• Give it 6 or more hours of direct sun for the best blue flower spikes, though it tolerates some afternoon shade during the hottest Texas summers.
• Plant it in heavy garden soil or aquatic planting media inside a mesh or solid pot, not a light potting mix with perlite that will float out, and that holds whether your yard dirt is Cross Timbers sand or Dallas area Blackland clay, since the plant lives in the water rather than your native soil.
• It spreads by rhizome and forms clumps, so give it its own pot if you share a pond with other water plants and don't want it taking over.
• It grows wild in ponds, marshes and ditches across the eastern half of North America, including parts of East Texas, so it is genuinely at home in a Texas water garden.

Fall

Fall is when pickerelweed starts winding down, and a light cleanup keeps the pond tidy heading into winter.

• Blooming slows and stops as days shorten and nights cool, usually by mid to late fall in North Texas.
• Leave seed heads in place for a while if you want to feed visiting waterfowl and songbirds, or trim them off if you'd rather not get volunteer seedlings around the pond edge.
• Cut back leaves as they yellow or collapse, but leave the rootstock and any remaining green growth alone.
• No need to move the pot before a typical Fort Worth winter, established plants handle the region's normal cold snaps in the water.

Trimming back yellowing foliage in fall keeps a front-yard pond looking maintained rather than neglected as it heads into winter.

Winter

Pickerelweed goes fully dormant in winter, dying back to its underwater rootstock until spring.

• Foliage dies back completely in freezing weather, this is normal dormancy, not a dead plant, the rootstock survives underwater.
• Keep the crown covered by at least an inch or two of water through freezes, the water insulates the rootstock even if the surface ices over.
• Clear out mushy, collapsed foliage from the pot as it dies back, leaving it in the water can foul the pond as it decomposes.
• Skip fertilizer and heavy handling until new growth shows up in spring.

Clearing collapsed, mushy foliage out of the pond in winter keeps a front-yard water feature looking tended rather than neglected.

Spring

Spring is when pickerelweed wakes up from winter dormancy, and it's the best time to divide crowded pots.

• New leaves push up from the rootstock as water and air warm, usually by mid to late March in the Fort Worth area.
• Divide crowded clumps now if you want more plants or need to thin a pot, each piece just needs a bit of rhizome with a growing point.
• Repot into fresh aquatic soil every couple of years in spring, since the plant uses up nutrients in its container over time.
• Watch water levels closely, spring rain and evaporation both swing fast here, so keep the crown covered by at least an inch of water.

Summer

Summer is peak bloom, with spikes of blue purple flowers held above the leaves from June into September.

• Flower spikes keep coming through the hottest months as long as the plant stays in full sun and standing water.
• Snip spent flower spikes at the base if you want a tidier look, this isn't required for rebloom but keeps the pond looking kept up.
• Watch for algae or duckweed building up around the pot in hot weather, thin it out so it doesn't shade the leaves.
• Check water depth over the crown at least weekly, Fort Worth summer heat evaporates pond water fast.

Snipping off spent flower spikes keeps a front-yard pond or water feature looking tended and intentional to anyone passing by, rather than left to go to seed.

Year-round

Pickerelweed (Pontederia cordata) is an easy pond and water garden plant that lives standing in water, not in dry garden soil.

• Set the pot on a shelf or a stack of bricks so about 1 to 6 inches of water covers the soil surface year round, this plant wants wet feet at all times.
• Give it 6 or more hours of direct sun for the best blue flower spikes, though it tolerates some afternoon shade during the hottest Texas summers.
• Plant it in heavy garden soil or aquatic planting media inside a mesh or solid pot, not a light potting mix with perlite that will float out, and that holds whether your yard dirt is Cross Timbers sand or Dallas area Blackland clay, since the plant lives in the water rather than your native soil.
• It spreads by rhizome and forms clumps, so give it its own pot if you share a pond with other water plants and don't want it taking over.
• It grows wild in ponds, marshes and ditches across the eastern half of North America, including parts of East Texas, so it is genuinely at home in a Texas water garden.

Fall

Fall is when pickerelweed starts winding down, and a light cleanup keeps the pond tidy heading into winter.

• Blooming slows and stops as days shorten and nights cool, usually by mid to late fall in North Texas.
• Leave seed heads in place for a while if you want to feed visiting waterfowl and songbirds, or trim them off if you'd rather not get volunteer seedlings around the pond edge.
• Cut back leaves as they yellow or collapse, but leave the rootstock and any remaining green growth alone.
• No need to move the pot before a typical Dallas winter, established plants handle the region's normal cold snaps in the water.

Trimming back yellowing foliage in fall keeps a front-yard pond looking maintained rather than neglected as it heads into winter.

Winter

Pickerelweed goes fully dormant in winter, dying back to its underwater rootstock until spring.

• Foliage dies back completely in freezing weather, this is normal dormancy, not a dead plant, the rootstock survives underwater.
• Keep the crown covered by at least an inch or two of water through freezes, the water insulates the rootstock even if the surface ices over.
• Clear out mushy, collapsed foliage from the pot as it dies back, leaving it in the water can foul the pond as it decomposes.
• Skip fertilizer and heavy handling until new growth shows up in spring.

Clearing collapsed, mushy foliage out of the pond in winter keeps a front-yard water feature looking tended rather than neglected.

Spring

Spring is when pickerelweed wakes up from winter dormancy, and it's the best time to divide crowded pots.

• New leaves push up from the rootstock as water and air warm, usually by mid to late March in the Dallas area.
• Divide crowded clumps now if you want more plants or need to thin a pot, each piece just needs a bit of rhizome with a growing point.
• Repot into fresh aquatic soil every couple of years in spring, since the plant uses up nutrients in its container over time.
• Watch water levels closely, spring rain and evaporation both swing fast here, so keep the crown covered by at least an inch of water.

Summer

Summer is peak bloom, with spikes of blue purple flowers held above the leaves from June into September.

• Flower spikes keep coming through the hottest months as long as the plant stays in full sun and standing water.
• Snip spent flower spikes at the base if you want a tidier look, this isn't required for rebloom but keeps the pond looking kept up.
• Watch for algae or duckweed building up around the pot in hot weather, thin it out so it doesn't shade the leaves.
• Check water depth over the crown at least weekly, Dallas summer heat evaporates pond water fast.

Snipping off spent flower spikes keeps a front-yard pond or water feature looking tended and intentional to anyone passing by, rather than left to go to seed.