How soon after planting can I fertilize?

Author: Alfred Blick  |  Last update: Tuesday, November 11, 2025

"Fertilizer can easily burn young plants, so I generally use organic matter, such as aged compost, to amend the soil before planting," she says. Two to three weeks after planting, you can spread fertilizer around the soil just below the outer canopy of the plant.

Should I fertilize plants right after planting?

Avoid fertilizing new plants until they are fully established, because it can cause an increase in tender new growth that can make the plant weak and leggy. Always follow the manufacturers recommended rates and application methods.

When should I fertilize my newly transplanted plants?

'Starter' fertilizer is applied at the time of transplanting so that nutrients will be available near the roots of young plants. This enables the plant to take up enough nutrients to establish quickly without requiring a lot of root growth to access nutrients spread through the soil profile.

How long after planting seed can I fertilize?

How long after reseeding or overseeding my lawn should I wait before fertilizing? Your best bet is to fertilize your newly seeded or overseeded lawn with Scotts® Turf Builder® Starter® Food for New Grass directly after seeding. Then, you need to wait 6 to 8 weeks before fertilizing again.

Can you fertilize a garden after planting?

You can broadcast dry fertilizer (1 pound for each 100 square feet of garden or 100 feet of row) over the entire garden plot before planting. Then after planting, side-dress along the plant rows. The fertilizer should be applied 2–3 inches to the side of, and 1–2 inches below, the seed level or plant row.

Compost vs. Fertilizer: I TESTED growing Peppers & Tomatoes with both - here are the results!

What fertilizer to use after planting?

Apply nitrogen immediately before or after planting annual crops or following green-up for perennial crops. If you have sandy soil, consider using more frequent applications of nitrogen but using a lower application rate.

Can you put fertilizer in the hole when planting?

She advises against amending the planting hole in any way: Backfill the hole with native soil, not a soil amendment. The idea is not to 'spoil' the plant by putting rich compost just in the hole, which will deter the roots from spreading out into the surrounding area.

Can you seed and fertilize the same day?

While it might be tempting to fertilize your lawn right after sowing new seeds, it's wise to keep these two tasks separate. Seeds and young sprouts are much more fragile compared to fully established turf, and fertilizer treatments could be too strong for their delicate growth.

What happens if you don't water after fertilizing?

Why Water After Fertilizing? Watering after fertilizing washes the fertilizer off of the grass blades and into the soil, where it can get to work nourishing your lawn. It's also important because if fertilizer sits too long without being watered in, it can burn the grass.

What is the best fertilizer for transplant shock?

A dilute, high-phosphorous fertilizer is preferable at transplant. We recommend Neptune's Harvest Fish Fertilizer (2-4-1), which is approved for certified-organic farms, or SeaCom PGR Seaweed Concentrate (0-4-4).

Should you water plants immediately after transplanting?

Make sure soil in a new pot is damp already, and water again after transplanting. If you're moving to a new spot in the yard, fill the new hole 3/4 full with water before setting the plant in. Let the water soak in around the plant a bit, pack the soil in, and water again.

How long after repotting can I fertilize?

Instead of fertilizing after repotting in Arizona, wait at least a month after your plant has become comfortable in the new pot. After that month has passed, we recommend fertilizing every two weeks.

Should you fertilize a newly transplanted plant?

Fertilization at the time of planting is generally not recommended. It is ineffective until the root system has a chance to reestablish.

How soon is too soon to fertilize?

Early spring, usually late April to early May, is the best time to fertilize. You want to wait until the soil warms and the entire lawn is thriving and actively growing. Fertilizing a lawn still dormant or partially dormant from winter will minimize the effectiveness of the treatment.

Which plants don't like nitrogen?

Most cucurbit crops and tomatoes do not convert nitrogen to fruit very well. Their response to excess levels of nitrogen is to grow more plant, which potentially leads to increased disease problems and later production.

Can you fertilize right after planting?

It's a good idea to start regular fertilizer applications between two to six weeks after planting a container, depending on the type of potting media, watering schedule, and rate of plant growth.

What is the best fertilizer for new seedlings?

What Type of Fertilizer to Use on Seedlings. Look for an all-purpose fertilizer that contains an even balance of nitrogen (N) to phophorous (P) to potassium (K). An all-purpose fertilizer will help young plants develop a sturdy root system and lush, healthy leaves.

Can you fertilize garden after planting?

"Fertilizer can easily burn young plants, so I generally use organic matter, such as aged compost, to amend the soil before planting," she says. Two to three weeks after planting, you can spread fertilizer around the soil just below the outer canopy of the plant.

Is it better to seed or fertilize first?

It's best to fertilize right after aerating and seeding, allowing the fertilizer to sink into the aeration holes ensuring deeper soil penetration. Proper fertilization encourages a lush, green, healthy lawn that stands out and offers a beautiful outdoor space for relaxation and play.

Can you plant seed and fertilizer at the same time?

However, it's generally best to fertilize separately from overseeding. Applying fertilizer and new grass seeds at the same time can lead to problems such as: Competition for nutrients: When seeding and fertilizing simultaneously, the existing grass will compete with the seeds for the available nutrients.

When to put starter fertilizer on new seed?

You can apply before seeding or laying sod, or after you plant the new grass seedlings. After planting you should wait six to eight weeks before reapplying the starter fertilizer. If you fertilize too early, it could result in the roots of the seedlings not being able to absorb the nutrients.

Should you fertilize freshly planted plants?

Trees and shrubs that should not be fertilized include newly planted specimens and those with severe root damage from recent trenching or construction. The root systems of these plants need to re-establish before fertilizers are applied.

When should you not apply fertilizer?

If you're not supposed to fertilize during heavy rains, you're also not supposed to fertilize on scorching days. During these days, lawns tend to lose their ability to retain moisture. When this happens, your lawn becomes drier and less able to absorb nutrients.

How do you add fertilizer to already planted plants?

First mix the recommended amount of liquid fertilizer and water in a watering can. Then simply pour the mix into the soil as if you're watering the plant. You can also put some into a spray bottle, and spray it on the leaves for foliar feeding.

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