Plant Care Hyssop Loosestrife

Hyssop Loosestrife

Also known as

Grass-poly, grass poly and lesser loosestrife


Lythrum hyssopifolia

How to care for Hyssop Loosestrife


How often to water your Hyssop Loosestrife

Water needs for Hyssop Loosestrife
0.5 cups
every 9

Hyssop Loosestrife 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 Hyssop Loosestrife

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 Hyssop Loosestrife in your home

Light needs and placement for plant Hyssop Loosestrife: 1ft from a window
1ft or less from
a window

Hyssop Loosestrife love being close to bright, sunny windows 😎.

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

Hyssop Loosestrife does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Hyssop Loosestrife in your home 🏡.


How to fertilize Hyssop Loosestrife

Nutrient, fertilizer, and repotting needs for Hyssop Loosestrife: 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 Hyssop Loosestrife after it doubles in size or once a year—whichever comes first.

Water Needs
Sunlight Needs

Care Summary for Hyssop Loosestrife

Hyssop Loosestrife

Hyssop Loosestrife

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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