Rhododendrons are always popular in the landscape

Rhododendrons are always popular in the home landscape.

Consider Golden Larix for fall color

Species crocus provide early spring color.

Native spotted bee balm attracts pollinators.

Native spotted bee balm attract pollinators

Ornamentals: Trees, shrubs, herbaceous

Plant Lists for Specific Uses	Indoor Plants	Herbaceous annuals, perennials, etc	Plant Diseases	Plant Insects	Plant Maintenance
Crabapples for the Home Landscape	Forcing Bulbs for Indoor Bloom	Flower Growing guides	Anthracnose of Flowering Dogwood	Arborvitae Leafminer	Cornell Guide to Planting and Maintaining Trees and Shrubs
Flowering Vines for Long Island: Indoors & Outdoors	Care of Holiday Plants ( Poinsettia, cyclamen, etc.)	Sequence of Bloom of Perennials, Biennials & Bulbs - Including height & color range	Bark Splitting on Trees	Asian Longhorned Beetle (NYS DEC fact sheet)	Creating the Urban Forest: The Bare Root Method (Planting trees bare root)
Pest Resistant Hedges and Screens for Privacy	Growing Conditions for Indoor Plants	Ornamental Grasses for the Home and Garden	Beech Leaf Disease	Birch Leafminer	Culture of Garden Roses
Dwarf Conifers for Landscapes	Propagation of House Plants	Annual Flowers for New York State (Site requirements, size, etc.)	Boxwood Blight	Black Turpentine Beetle & It's Role in Pine Mortality	Cultural Tree Problems
Rhododendrons for Long Island		Annuals for Special Uses	Boxwood Blight Frequently Asked Questions	Black Vine Weevil (Taxus Weevil)	Hom eowners Guide for Beautiful, Safe and Healthy Trees
Recommended Urban Trees - A guide to tree selection, site assessment and planting		Ferns and Native Plants in the Natural Landscape for Long Island	Cankers on Trees	Cankerworms (Inchworms)	How to Correctly Prune a Tree
Seashore Plantings		Meadow Gardening	Cenagium Canker of Pines	Emerald Ash Borer (NYS DEC early detection brochure)	How to Plant Trees and Shrubs
Virginia Urban Street Tree Selector - Allows user to input site factors, tree characteristics, etc.		Perennials	Cytospora Cankers	Emerald Ash Borer (NYS DEC poster)	Planting and After-care of Container Grown Plants
Trees and Shrubs for Moist to Wet Soils		Perennials for Special Uses	Diagnosing Rhododendron Problems	Hemlock Woolly Adelgid	Pruning Hydrangea
Woody Plants for Shady Places		Potpourri and Fragrance Gardens	Diplodia Tip Blight on Pines	Holly Leafminers	Illustrated Guide to Pruning Trees and Shrubs
Deciduous Woody Groundcovers - Cornell University Urban Horticulture Institute		Plant List for Everlastings (Plants for Drying)	Gymnosporangium Rust the Three Common Cedar Rust Diseases	Horned Oak Galls	Protect our Trees from Pests-Don't Move Firewood
Weed Suppressive Groundcovers		The Culture of Garden Chrysanthemums	Juniper Tip Blight	Norway Spruce Gall Midge
Know your trees (identification key to NY trees)		Summer Flowering Bulbs	Laurel Wilt in New York	Periodical Cicada Emergence 2025 (link to UCONN website)
Soil Salt Tolerance of Some Common Landscape Plants		Ten Winsome Wildflowers for Your Garden	Leaf Scorch	Pine Sawflies
Common Woody Ornamentals and their common Insect and Disease Problems		The Culture of Herbaceous and Tree Peonies	Maple Decline	Southern Pine Beetle (DEC fact sheet)
Long Island Native Woody Plants for Seaside Restoration		The Culture of Spring Flowering Bulbs	Normal Needle and Foliage Shedding on Evergreens	Spongy Moth (formerly Gypsy Moth)
Saunders Nursery Boxwood guide 5th edition		Growing Iris	Oak Leaf Blister	Spotted Lanternfly
Alternatives to Boxwood		Impatiens Downy Mildew	Oak Wilt Protective Zone NY State DEC	Spotted Lanternfly and Pets (FAQ's)
			Oak Wilt NY State DEC	Spruce Gall Adelgid
			Oak Wilt Risk: Distinguishing between Red and White Oaks	Spruce Spider Mite
			Pachysandra Leaf Blight	The Japanese Black Pine: What's Happening
			Sooty Mold	White Pine Weevil
			Tree Dwelling Lichens	White Prunicola Scale
			Verticillium Wilt
			Winter Injury
			Why Flowering Shrubs Fail to Bloom
			How to Recognize Hazardous Defects in Trees

Contact

Alice Raimondo
Horticulture Consultant
aw242@cornell.edu
631-727-4126

Last updated November 26, 2025

Cornell Cooperative Extension

Suffolk County

Cornell Cooperative Extension

Suffolk County

Ornamentals: Trees, shrubs, herbaceous

Contact

Horticulture Factsheets

Cornell Cooperative Extension
Suffolk County