Plant Care Flat-Top Whiteweed

Flat-Top Whiteweed

Also known as

Ageratum coelestinum, Ageratum corymbosum albiflorum, Ageratum corymbosum album, Ageratum corymbosum elachycarpum, Ageratum corymbosum euryphyllum, Ageratum corymbosum humboldtii, Ageratum corymbosum jaliscense, Ageratum corymbosum lactiflorum, Ageratum corymbosum latifolium, Ageratum corymbosum longipetiolatum, Ageratum corymbosum regelii, Ageratum corymbosum salicifolium, Ageratum corymbosum subsetiferum, Ageratum corymbusom lactiflorum, Ageratum elachycarpum, Ageratum hudsonii, Ageratum lucidum, Ageratum robinsonianum, Ageratum rugosum, Ageratum salicifolium, Ageratum salicifolium annectens, Alomia robinsoniana, Alomia wendlandii, Caelestina ageratoides, Caelestina ageratoides latifolia, Caelestina azurea, Caelestina caerulea, Caelestina corymbosa, Caelestina lessingiana, Caelestina micrantha, Caelestina sclerophylla, Carelia corymbosa, Carelia salicifolia, Carelia stricta, Coelestina ageratoides, Coelestina sclerophylla, Eupatorium coeruleum, Phalacraea wendlandii and Sparganophorus ageratoides


Ageratum corymbosum

How to care for Flat-Top Whiteweed


How often to water your Flat-Top Whiteweed

Water needs for Flat-Top Whiteweed
0.5 cups
every 9

Flat-Top Whiteweed needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Flat-Top Whiteweed

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Flat-Top Whiteweed in your home

Light needs and placement for plant Flat-Top Whiteweed: 1ft from a window
1ft or less from
a window

Flat-Top Whiteweed love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Flat-Top Whiteweed does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Flat-Top Whiteweed in your home 🏡.


How to fertilize Flat-Top Whiteweed

Nutrient, fertilizer, and repotting needs for Flat-Top Whiteweed: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Flat-Top Whiteweed after it doubles in size or once a year—whichever comes first.

Water Needs
Sunlight Needs

Care Summary for Flat-Top Whiteweed

Flat-Top Whiteweed

Flat-Top Whiteweed

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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