spruce

Listing 11 - 20 from 1000 for spruce

Identify the Spruce
... for a Christmas Tree Simple Tree Identification Related Sites LandscapingGardeningCampingBiology Identify the Spruce From Steve Nix, Your Guide to Forestry. FREE Newsletter. Sign Up Now! Trees in the Pine Family - Pinaceae Pinaceae Earle Description of Various Spruce red black white sitka Englemann Leaves: persistent or deciduous, linear or needle-like ...
forestry.about.com

Pine, Spruce or Fir?
... Pine, Spruce or Fir? Pine, Spruce or Fir? GardenLine | Trees and Shrubs | Pine, Spruce or Fir? There is often much confusion when trying to determine what type of evergreen ... 2 or 3, the cone scales are much thickened, and the wood is relatively hard. Spruce (Picea) The spruces are evergreen trees and have long, often cone-shaped crowns and straight ...
gardenline.usask.ca

Spruce Pine Reproductive Structures
... Spruce Pine Reproductive Structures Pinus glabra Walt. Reproductive Structures Male cones occur in clusters at base ... with black triangular to oval wing 13 mm (0.5 in) long; glossy brown Although spruce pine begins producing cones by age 10, the peak production occurs between ages 20 to ...
ncsu.edu

Spruce Pine Leaves and Buds
... Spruce Pine Leaves and Buds Pinus glabra Walt. Leaves and Buds Bud Characteristics: 2 mm (0. ...
ncsu.edu

Yellow-Headed Spruce Sawfly
... Spruce Sawfly Yellow-Headed Spruce Sawfly GardenLine | Common Saskatchewan Pests | Yellow-Headed Spruce Sawfly Russell Friesen The yellow-headed spruce sawfly (Pikonema alaskensis) is a serious pest of ornamental and shelterbelt spruce ...
gardenline.usask.ca

Fir, Pine or Spruce - Which Do I Have?
... the branches and branchlets. To tell spruce and fir trees apart, it helps to know that spruce needles appear square in cross- ... . Spruce needles can be blunt as in the white spruce, or sharply pointed as in the Colorado spruce. The needles on both spruce and ... one side as compared to the rounded appearance of spruce tree branchlets. Spruce needles are attached to small, stalk-like woody projections. ...
gardenline.usask.ca

Spruce Trees Provoke Turf War
... dies in the dry shade under a permanently-parked spruce? Within its lifetime, a spruce cannot significantly acidify the soil below it. What to do: First, admit that growing conditions below a car and a spruce are very similar. Next, recognize how silly you'd look trying ... accept the natural beauty of bare soil below a spruce, apply a thick mulch of spruce cones to the edged circle. If you still ...
gardenline.usask.ca

White pine weevil (Pissodes strobi) biological performance is unaffected by the jasmonic acid or wound-induced defense response in Norway spruce (Picea abies)
... Pissodes strobi Peck) is a pest of several native pine and spruce species and of the introduced species, Norway spruce (Picea abies Karst). We evaluated the feeding activities, oviposition ... terpene synthase genes showed distinctive profiles in Norway spruce bark and needles following all treatments. Although the Norway spruce trees showed different physiological responses to mechanical wounding and ...
heronpublishing.com

Effects of ABA application on cessation of shoot elongation in long-day grown Norway spruce seedlings
... of shoot elongation in long-day grown Norway spruce seedlings Home Editors Contents Contribute Subscribe Contact Tree Physiology, 1: ... on cessation of shoot elongation in long-day grown Norway spruce seedlings Ola M. Heide Department of Botany, Agricultural University of ... (ABA) was applied in lanolin to apical buds of Norway spruce (Picea abies (L.) Karst.) seedlings actively growing in a 24 ...
heronpublishing.com

The electrical conductivity of Norway spruce needle diffusate as affected by certain air pollutants
... Heron Publishing—Victoria, Canada [ PDF ] [ Return to Contents ] The electrical conductivity of Norway spruce needle diffusate as affected by certain air pollutants Theodore Keller Swiss Federal ... Research, Birmensdorf, Switzerland / Received November 25, 1985 Summary Four-year-old potted Norway spruce (Picea abies (L.) Karst.) grafts established with scion material from three mature trees ...
heronpublishing.com