Dormant Spray

We apply dormant season spray to deciduous (leaf losing) trees and shrubs in the winter to help prevent insect pests and diseases the rest of the year.

Experts often recommend a combination spray consisting of horticultural oil mixed with earth friendly copper or Bordeaux.

The oil serves to suffocate insects and mites along with their over wintering eggs. Copper helps prevent fungal disease such as powdery mildew, black spot and rust on roses, and peach leaf curl and shot hole fungus on stone fruits.

In Santa Barbara we usually spray our roses with oil/lime-sulfur immediately after pruning.

At least two sprayings for fruit trees is recommended between December, when they lose their leaves, and February, before the buds break.


  1. Read product labels carefully.
  2. Clean ground of all old leaves etc. prior to spraying.
  3. Apply spray thoroughly. Cover all branches, crotches and trunks as well as the ground under the drip line of the plant.
  4. Do not apply lime sulfur to apricot trees.
We are Closing Temporarily on Friday, April 3, 2020

We have made the hard decision to close on Friday, April 3, 2020 to help protect our families and yours, and to help enforce the stay at home order. We will be back in the near future to serve you!

We have suspended phone and email/online orders effective immediately, so that we can focus on filling orders already received. We apologize for the inconvenience.

Please check back here, or on our Facebook page for the latest updates on re-opening and other news. Thank you, Santa Barbara!

Your friends at La Sumida Nursery

Temporarily Reduced Business Hours

Monday, March 30 through Thursday, April 2, 2020
9:00am - 3:00pm

Business Hours

Temporarily Reduced Hours
Monday March 30 through Thursday, April 2: 9:00am – 3:00pm

Contact Us

La Sumida Nursery
165 S. Patterson Avenue
Santa Barbara, CA 93111

(805) 964-9944 phone

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