Plant cuttings being propagated in the Cornell Greenhouses
Image by Sandy Repp

Start cuttings taken from healthy new growth of herbs in June.

June

Improper watering is the number one killer of plants brought into our office. Check your watering system and improve drainage where needed. Many diseases like wet conditions. For more information, see our fact sheet on this topic.


Treat lawn for nutsedge mid-month and again ten days later (do not try to hand pull). For more information, see our fact sheet on this topic.


Remove faded leaves from the base of bearded iris to discourage iris borer. For more information, see our fact sheet on this topic.


Harvest lettuce, peas, spinach and other early crops.


Try taking softwood cutting for propagation of woody plants.


Dahlias should be planted now. For more information, see our fact sheet on this topic.


Plant low growing perennials around the roots of the clematis, they like their roots shaded. For more information, see our fact sheet on this topic.


Pick faded blooms of rhododendrons, lilacs, andromedas, mountain laurels and other spring flowering shrubs. This is called deadheading.


Check soil in container plants frequently. They tend to dry up quickly. Hanging baskets may need water every day. For more information, see our fact sheet on this topic.


Start cuttings taken from healthy new growth of herbs such as lavender, rosemary, scented geranium and sage.


Fertilize peonies just after blossoms fade. For more information, see our fact sheet on this topic.


Protect berry bushes from birds by using netting. For more information, see our fact sheet on this topic.


Remember Nassau County sprinkling regulations - odd numbered houses may only water on odd numbered calendar days. Even numbered houses may water on even numbered days. Sprinkling is not allowed from 10 am to 4 pm. For information regarding water lawns, see our fact sheet on this topic. For information regarding Irrigation Consumer Bill of Rights, see our fact sheet on this topic. For more information regarding watering practices, see our fact sheet on this topic.


Fertilize annuals and vegetables with a low nitrogen fertilizer. This is to ensure more flowers and fruit and less greenery. For more information, see our fact sheet on this topic.


Look for mealy bugs and/or scale on Taxus (yew). For more information, see our fact sheet on this topic.


Monitor trees and shrubs for crawlers of cottony maple scale and juniper scale. For information regarding Scale Insects, see our fact sheet on this topic. For more information regarding Juniper Scale, see our fact sheet on this topic.

Last updated February 14, 2017