NH State Forest Nursery

quality seedlings since 1910
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Helpful Tips for Seedling Survival

Seedlings are lifted from our seedbeds as early in the spring as we can work the soil. This requires that the soil in and around seedlings and roots is completely frost free, which is usually in early April (see Archive for past schedules). Once lifted, seedlings are graded, moistened, packaged, and placed in our cold storage room (kept at about 35 degrees F). See Spring Lifting and Shipping for more details.
 

Testing soil for frost pockets with metal rod

The impressive Lundeby tree lifter

Seedlings in tubs ready for transport to be graded

Testing for frost

Lifting

To grading barn

Early spring is the best time of year to plant seedlings in New Hampshire. Spring planting provides seedlings with a full growing season to get re-established before going into winter. Here are some tips to maximize seedling survival after you receive them from the nursery.
 
bulletProtect seedlings from direct sunlight during transport and storage until planted. Heat can be magnified inside the Kraft paper bags.
bulletKeep seedlings as cool (above freezing) as possible. Cool temperatures help keep the seedlings dormant until they can be planted.
bulletKeep roots moist until planted. It takes only minutes of exposure on a warm dry day to kill roots by drying.
bulletPlant your seedlings as soon as possible. Conifer roots will begin growth as the soil warms. If seedlings cannot be refrigerated, heel in your seedlings (see instructions at right) if planting will be delayed more than 2 days.
bulletDo not fertilize the first year of planting. Fertilizer can burn roots that are essential for the seedlings to re-establish in their new home.
bulletDo not store seedlings in water for longer than a few hours. Roots need oxygen too.
bulletPlant seedlings as deep as they were in the seedbed (to the root collar). This coincides with a color line a little above the roots.
bulletDon't worry about watering in a "normal" cool, wet spring. During extended dry spells, a good soil soaking once a week is usually sufficient.
bulletPress the soil down firmly around seedling when planting to squeeze out air pockets. Seedling roots must be in contact with mineral soil to absorb water and nutrients needed for growth.
bulletControl grass and weeds around small seedlings. Grass and weeds compete for water, nutrients and sunlight. This can be done by hand-weeding, mowing, mulching or using herbicides.
 

Grading seedlings at the NH State Forest Nursery

Bagging seedlings in poly-line Kraft bag

Bagged seedlings in cold storage

Grading

Bagging

Cold storage

The following publications are recommended for further reading. They are in pdf format and require the free Adobe Acrobat Reader to view or print.
 



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Heeling In

If you cannot plant within a few days, it is suggested you heel-in seedlings for planting in late summer or the next spring.

v-shaped trench

1. Dig V-shaped trench in moist, partially shaded place.

break bundles

2. Break bundles and spread out evenly.

water well

3. Fill in loose soil and water well.

firm soil with feet

4. Complete filling in soil and firm with feet.

Water heeled-in seedlings heavily once or twice per week particularly during dry, hot weather.


 

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