grow down

grow down

To move downward through or into something over time. Typically said of roots. The roots of that tree better not be growing down into our sewer pipe!
See also: down, grow
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

grow down (into something)

[for roots] to penetrate downward as they grow. The young roots grew down into the rich soil. The roots grew down and drew up the precious water.
See also: down, grow
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in classic literature ?
Find a home for yourself in one of the lovely flowers that grow down there; now I will set you down, and you can do whatever you like.'
Other cancers may grow down in the ear canal where usually they aren't caught early.
Last time I was explaining how roots will always grow down the way and shoots up the way.
It took some trial and error to get the hang of what will and won't grow down here, and I'm still learning every season, but I'm finally starting to understand these fruits and vegetables, and their different needs and personalities.
After that first skim of ice covers the pond, the crystals make a right-angled turn and grow down. When ice first forms on a lake, there are other variables to consider besides temperature.
Your roots will grow down into God's love and keep you strong" (Ephesians 3:17).
Stake a claim: It's a good idea to give newly planted trees some support Mighty soak: Water in well to make sure roots grow down deep Bare root is best, but be ready to plant You'll be blown away by the transformation a single plant can bring once spring arrives Firm down soil in layers to exclude air pockets
Bare root is best, but be ready to plant straight away Mighty soak: Water in well to make sure roots grow down deep Stake a claim: It's a good idea to give newly planted trees some support
If this happens, the only option may be to break through or cut off the bottom of the pot and remove a paving slab underneath so the plants roots can grow down into the soil.
The trays hold an inch or so of additional water, reducing water runoff and promoting deeply rooted plants because the roots grow down to access the reservoir water.
From there, international partners have been cultivated and nurtured, resulting in the exceptional business performance, which has helped the company grow down the years.
Watering should reach just below the base of the bulbs, encouraging the roots to grow down into the water.