"grow sufficiently" is a correct and usable phrase in written English.
It can be used when referring to something increasing past a certain point. For example: "The plant needs adequate sunlight to grow sufficiently."
Their bones do not grow sufficiently and the children are very short.
In January, Avanti, another satellite firm, said the UK's thriving space sector could grow sufficiently without a spaceport.
When they grow sufficiently rich they, too, will start to reduce their air pollution.All this contradicts the litany.
They found that if investment returns grow sufficiently volatile, they can completely overwhelm the natural diffusion of wealth generated by transactions.
Or exports may fail to grow sufficiently because labour costs are rising very rapidly and pushing up prices of exports faster than in competing countries.
Institutional investors reasoned at that time that the dividends on a diversified pool of equities would grow sufficiently to offset the loss in immediate income.
All this is a way of saying that the Nasdaq has been populated with a sufficient number of companies whose market capitalizations have grown sufficiently large to influence the index such that the Nasdaq now contains a reasonable number of growing companies.
Never cut into old wood, as it won't re-grow sufficiently at this time of year, but the coming weeks will allow sufficient time for nice tight re-growth before winter sets in.
Yet her dancing never grew sufficiently radiant in her pas de deux with Apollo.
At some point, the threats grew sufficiently serious that the F.B.I. got involved.
By the early seventies, Steidl's printing business had grown sufficiently that he had several employees.
