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Harlequins Gardens

Harlequins Gardens

Boulder's specialist in well-adapted plants

We’re Open Tues–Sun, 9-5, through October!

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Home | Blog | Feed your Vegetables so they can Feed You!

Feed your Vegetables so they can Feed You!

August 4, 2026

Age Old Bloom

This spring, you probably incorporated some organic fertilizer into the soil for your garden, particularly if you are growing vegetables or annual leafy herbs. For optimal yields, many of these plants will benefit from additional fertilizer applications through the summer. This can be done with side-dressings of granular fertilizers like Age Old ‘Grow’ (for foliar crops) or ‘Bloom’ (for fruiting crops). But for faster results, we recommend liquid organic fertilizers, because they can be quickly absorbed by plant roots and foliage. Tomatoes, peppers, eggplants, squashes, pumpkins, melons, and corn are considered either moderate or heavy feeders, and we recommend using either Age Old liquid ‘Bloom’ or Neptune’s ‘Rose & Vegetable’. This can be applied to the soil every two weeks or applied to all surfaces of the leaves for foliar feeding (apply to foliage in cloudy weather or just after sundown). Kale, Collard Greens, Broccoli, Cauliflower, and Cabbage are ‘brassicas’ that are considered heavy feeders, along with Bulbing Fennel, Swiss Chard and Basil. These foliage crops appreciate supplemental summer feeding to maintain their supply of nitrogen, which can be easily supplied every two weeks by Age Old liquid ‘Grow’ or Neptune’s Harvest Fish & Seaweed’.

Tags: liquid fertilizers, plant health, soil health Categories: Blog, Plant and Soil Health / Disease, Products, Soils, OLD-Blog

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Sign-up for our weekly e-newsletters to receive empowering gardening tips, ecological insights, and to keep up on happenings at Harlequin’s Gardens — such as flash sales and “just in” plants. We never share customer’s addresses!

We do not ship plants!

Our plants are for sale ONLY at our Boulder location. We DO NOT ship plants or any other products.  Come visit us!

Hours by Season

MARCH HOURS
Thursday-Sunday, 9AM-5PM

STARTING APRIL 1
Tuesday-Sunday, 9AM-5PM

 

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Contact Us

303-939-9403 (Retail)
staff@harlequinsgardens.com

4795 North 26th St
Boulder, CO 80301

Sign-up for E-Newsletters!

Sign-up for our weekly e-newsletters to receive empowering gardening tips, ecological insights, and to keep up on happenings at Harlequin’s Gardens — such as flash sales and “just in” plants. We never share customer’s addresses!

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Our Hours

JANUARY-FEBRUARY HOURS:
Thursday-Saturday, 10AM-4PM

MARCH HOURS:
Thursday-Sunday, 9AM-5PM

APRIL-OCTOBER HOURS:
Tuesday-Sunday, 9AM-5PM
Closing end of Oct.

Mondays, CLOSED

The plants we grow are organically grown. All the plants we sell are free of bee-killing neonicotinoid pesticides.