How to clear textarea after a button is triggered?

Hi, I’m working on having the textbox area to be clear after the send button is triggered.
I’ve been trying but is not working.
May I know how can I achieve this?

      <ion-item *ngFor="let answer of answersList" text-wrap>

  <ion-toolbar position="bottom">
    <ion-row style="align-items: stretch">
      <ion-col width-90>
        <input ion-textarea type="text" id = "inputText" [(ngModel)]="question" placeholder="Type a message..">

        <button ion-button round (click)="ask()">Send</button>
  <!--<div *ngFor="let answer of answers">

You can probably just do this after submitting

this.question = “”;