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Thuja Green Giant Fertilizer

4.6 · 58 reviews

Thuja Green Giant puts on serious size when it is watered and fed well. Our liquid Thuja Green Giant Fertilizer is made for this one hybrid arborvitae, and it mixes into water so a whole screen gets the same feed on the same day. Follow the mixing directions on the bottle, and pour it around the base of each tree.

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When your Green Giants may benefit from feeding

  • When a newly planted screen is in its first two or three seasons and roots are still reaching into surrounding soil
  • When established trees are extending new green growth through spring and early summer
  • When a row sits in thin, sandy or heavily amended backfill that holds little nutrition
  • When trees are grown in large containers, where every watering drains nutrients out of the pot

Green Giant's growth rate is set mostly by water, spacing and sun — feeding supports it rather than driving it. Thinning at the base of a tightly spaced row is a light problem, not a nutrient one, and foliage browned by winter wind will not green up again.

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Supports healthy, resilient roots that absorb nutrients more effectively.

Works for arborvitae varieties

  • Thuja Green Giant
  • Emerald Green Arborvitae
  • American Arborvitae
  • Techny Arborvitae
  • Degroot's Spire
  • North Pole Arborvitae
  • Golden Globe Arborvitae
  • Holmstrup Arborvitae

How to care for Thuja Green Giant

Light

Full sun, at least six hours a day, is where Green Giant puts on its three feet a year. In shade the growth slows and the hedge stays open.

Water

Water new plants deeply twice a week through the first summer, then weekly in dry spells. Let the soil go mostly dry between waterings, since roots rot in soggy ground.

Soil

Loose, well-draining soil that holds some moisture, at pH 6.0 to 8.0. Space Green Giant five to eight feet apart for a solid privacy screen.

Feeding

Feed Thuja Green Giant Fertilizer every one to two weeks in spring and summer and about once a month in fall and winter, watered in around the root zone.

Pruning

Trim the sides lightly each year in late spring to thicken the screen, staying within green growth. Leave the leader alone until the hedge reaches the height you want.

Temperature

Hardy from zone 5 to 9 and tolerant of southern heat. Winter browning usually traces back to drying wind or road salt rather than to the cold.

Frequently asked questions

How fast will Green Giant grow with feeding?

Established Green Giants can put on three feet or more a year, and Thuja Green Giant Fertilizer is made to support that pace. Feeding supplies the nitrogen for dense new foliage and the nutrients a fast-growing hedge draws down quickly, but growth rate depends on the whole picture: steady feeding from spring through midsummer, deep watering through the first two years while roots establish, full sun and good drainage. Newly planted trees spend their first season on roots and speed up after that.

How often should I feed my thuja green giant?

Every four to six weeks from early spring through midsummer, then stop so your trees harden off before winter. Thuja Green Giant Fertilizer is a liquid, so water it in across the root zone under the whole canopy rather than just at the trunk. For a hedge row, that means the full strip along the planting line, since the roots of neighboring trees knit together and share the ground between them.

Why are my arborvitae browning?

Winter burn, drought and root damage from planting too deep are the usual causes, and none of them is a nutrient problem, so start there. Water deeply in dry spells, especially through the first two years, mulch the root zone and check that the root flare sits at soil level. Once your tree is stable, feeding in spring with Thuja Green Giant Fertilizer supports the recovery growth that fills in behind the browned patches. Feeding a stressed tree before fixing the cause adds to its load.

Can I use it on potted and in-ground plants?

Yes. Thuja Green Giant Fertilizer works at the same dilution in both situations; only the method changes. Use a watering can for container arborvitae and small planting beds, and a hose-end sprayer set to the recommended rate for a hedge row or larger in-ground trees. Potted arborvitae need the routine most, since containers lose nutrients with every watering and the roots have nowhere else to look.

Will this burn my plants?

Thuja Green Giant Fertilizer is a dilute liquid feed, and dilution is what matters here. Fertilizer burn happens when concentrated salts sit against the roots: too much product in too little water, or granules piled at the base of a trunk. Mixed at the recommended dilution and applied every four to six weeks across the root zone, the nutrients arrive in solution at a strength the roots take up as they water. Keep to that mix and water it in well; if you ever mix too strong, flush the area with plain water.

When will I see results?

Greener foliage and stronger new growth usually show within two to four weeks of consistent feeding, at the tips first, where new shoots come in a deeper green. The result most people want from Thuja Green Giant Fertilizer, a hedge that fills in, builds over the season: height and density come with each flush of growth, and a row that has been hungry keeps improving through the following year as feeding continues.

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Thuja Green Giant Fertilizer 8oz $11.99